License clarification.

Update the license to match what is in the webwork2 repo.
This includes clarifying we use artistic license 1.0,
remove the fsf physical address and provide links to both
the artistic license 1.0 and gpl 2.0.

The old license and new license mention copies of the license
should be provided in the "package", by they were not in the pg
repo. This adds them to the doc directory to match what is done
in webwork2.

Remove the old README which was just a copyright statement.

Author: somiaj

LICENSE

@@ -1,8 +1,9 @@
                                      WeBWorK
-                         Online Homework Delivery System
+                           Program Generation Language
                                    Version 2.*
 
                     Copyright 2000-2025, The WeBWorK Project
+
                               All rights reserved.
 
     This program is free software; you can redistribute it and/or modify
@@ -12,19 +13,19 @@
         Software Foundation; either version 2, or (at your option)
         any later version, or
 
-        b) the "Artistic License" which comes with this package.
+        b) the "Artistic License" 1.0 which comes with this package.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See either
     the GNU General Public License or the Artistic License for more details.
 
-    You should have received a copy of the Artistic License with this
-    package, in the file named "Artistic".  If not, we'll be glad to provide
-    one.
+    You should have received a copy of the Artistic License 1.0 with this
+    package, in the file named "Artistic" inside the `doc` folder.  If not,
+    you can find a copy at https://github.com/openwebwork/pg/blob/main/doc/Artistic
+    or https://perlfoundation.org/artistic-license-10.html.
 
     You should also have received a copy of the GNU General Public License
-    along with this program in the file named "Copying". If not, write to the
-    Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-    02111-1307, USA or visit their web page on the internet at
-    http://www.gnu.org/copyleft/gpl.html.
+    along with this program in the file named "Copying" inside the `doc` folder.
+    If not, you can find a copy at https://github.com/openwebwork/pg/blob/main/doc/Copying
+    or https://www.gnu.org/licenses/old-licenses/gpl-2.0.html.

README

@@ -0,0 +1,131 @@
+
+
+
+
+			 The "Artistic License"
+
+				Preamble
+
+The intent of this document is to state the conditions under which a
+Package may be copied, such that the Copyright Holder maintains some
+semblance of artistic control over the development of the package,
+while giving the users of the package the right to use and distribute
+the Package in a more-or-less customary fashion, plus the right to make
+reasonable modifications.
+
+Definitions:
+
+	"Package" refers to the collection of files distributed by the
+	Copyright Holder, and derivatives of that collection of files
+	created through textual modification.
+
+	"Standard Version" refers to such a Package if it has not been
+	modified, or has been modified in accordance with the wishes
+	of the Copyright Holder as specified below.
+
+	"Copyright Holder" is whoever is named in the copyright or
+	copyrights for the package.
+
+	"You" is you, if you're thinking about copying or distributing
+	this Package.
+
+	"Reasonable copying fee" is whatever you can justify on the
+	basis of media cost, duplication charges, time of people involved,
+	and so on.  (You will not be required to justify it to the
+	Copyright Holder, but only to the computing community at large
+	as a market that must bear the fee.)
+
+	"Freely Available" means that no fee is charged for the item
+	itself, though there may be fees involved in handling the item.
+	It also means that recipients of the item may redistribute it
+	under the same conditions they received it.
+
+1. You may make and give away verbatim copies of the source form of the
+Standard Version of this Package without restriction, provided that you
+duplicate all of the original copyright notices and associated disclaimers.
+
+2. You may apply bug fixes, portability fixes and other modifications
+derived from the Public Domain or from the Copyright Holder.  A Package
+modified in such a way shall still be considered the Standard Version.
+
+3. You may otherwise modify your copy of this Package in any way, provided
+that you insert a prominent notice in each changed file stating how and
+when you changed that file, and provided that you do at least ONE of the
+following:
+
+    a) place your modifications in the Public Domain or otherwise make them
+    Freely Available, such as by posting said modifications to Usenet or
+    an equivalent medium, or placing the modifications on a major archive
+    site such as uunet.uu.net, or by allowing the Copyright Holder to include
+    your modifications in the Standard Version of the Package.
+
+    b) use the modified Package only within your corporation or organization.
+
+    c) rename any non-standard executables so the names do not conflict
+    with standard executables, which must also be provided, and provide
+    a separate manual page for each non-standard executable that clearly
+    documents how it differs from the Standard Version.
+
+    d) make other distribution arrangements with the Copyright Holder.
+
+4. You may distribute the programs of this Package in object code or
+executable form, provided that you do at least ONE of the following:
+
+    a) distribute a Standard Version of the executables and library files,
+    together with instructions (in the manual page or equivalent) on where
+    to get the Standard Version.
+
+    b) accompany the distribution with the machine-readable source of
+    the Package with your modifications.
+
+    c) give non-standard executables non-standard names, and clearly
+    document the differences in manual pages (or equivalent), together
+    with instructions on where to get the Standard Version.
+
+    d) make other distribution arrangements with the Copyright Holder.
+
+5. You may charge a reasonable copying fee for any distribution of this
+Package.  You may charge any fee you choose for support of this
+Package.  You may not charge a fee for this Package itself.  However,
+you may distribute this Package in aggregate with other (possibly
+commercial) programs as part of a larger (possibly commercial) software
+distribution provided that you do not advertise this Package as a
+product of your own.  You may embed this Package's interpreter within
+an executable of yours (by linking); this shall be construed as a mere
+form of aggregation, provided that the complete Standard Version of the
+interpreter is so embedded.
+
+6. The scripts and library files supplied as input to or produced as
+output from the programs of this Package do not automatically fall
+under the copyright of this Package, but belong to whoever generated
+them, and may be sold commercially, and may be aggregated with this
+Package.  If such scripts or library files are aggregated with this
+Package via the so-called "undump" or "unexec" methods of producing a
+binary executable image, then distribution of such an image shall
+neither be construed as a distribution of this Package nor shall it
+fall under the restrictions of Paragraphs 3 and 4, provided that you do
+not represent such an executable image as a Standard Version of this
+Package.
+
+7. C subroutines (or comparably compiled subroutines in other
+languages) supplied by you and linked into this Package in order to
+emulate subroutines and variables of the language defined by this
+Package shall not be considered part of this Package, but are the
+equivalent of input as in Paragraph 6, provided these subroutines do
+not change the language in any way that would cause it to fail the
+regression tests for the language.
+
+8. Aggregation of this Package with a commercial distribution is always
+permitted provided that the use of this Package is embedded; that is,
+when no overt attempt is made to make this Package's interfaces visible
+to the end user of the commercial distribution.  Such use shall not be
+construed as a distribution of this Package.
+
+9. The name of the Copyright Holder may not be used to endorse or promote
+products derived from this software without specific prior written permission.
+
+10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+				The End