Fixed Issue #21: typo in setup.py (for non-Windows platforms)

Author: PierreRaybaut

setup.py

@@ -62,7 +62,7 @@
 if os.name == 'nt':
     SCRIPTS = ['python-qwt-tests', 'python-qwt-tests.bat']
 else:
-    SCRIPTS = ['python-tests']
+    SCRIPTS = ['python-qwt-tests']
 SCRIPTS = [osp.join('scripts', fname) for fname in SCRIPTS]