TCLAP 1.2.5

[ManuelAtWork]

v1.2.5 fixes a problem with C++20 (among other things)

[bgilbert]

Some quick observations, haven't fully reviewed.

[ManuelAtWork]

CI used to fail for Win32 platforms. Explanation:

• Tests in the original TCLAP rely on bash-scripts, and were never meant to run on Windows.
• Moreover, TCLAP is known to cause problems on Windows.
• Wraps are not meant to fix deficits in the original code.
• Therefore, I disabled tests on Windows.

[bgilbert]

What is the nature of the "problems on Windows"? If it isn't expected to work at all there, we should disable the project entirely on Windows (with build_on in ci_config.json), not just the tests.

[ManuelAtWork]

What is the nature of the "problems on Windows"? If it isn't expected to work at all there, we should disable the project entirely on Windows (with build_on in ci_config.json), not just the tests.

There are 2 areas of concern:

• Occasional incompatilibty of the TCLAP implementation. (keywords: std:sstream, config.h, include paths, ...) It depends on the MSVC/MSYS version. Many MSVC users will be lucky, so I would not generally disable builds entirely.
• Automated tests: They used to rely on bash (and probably line endings). So they never ran on Windows.

The present wrap mirrors the policy of the original TCLAP developers: "On Win32, use at your own risk. No tests."