math/cddlib:

• Update to 0.94l
• Adopt port
• Simplify COMMENT.
• Remove USE_GITHUB and include MASTER_SITES instead. We are only working with releases anyway, and the release tar.gz includes already build documentation, which means we don't depend on TeX Live for building the manual anymore.
• Replace MANUAL with the more common DOCS option.
• Remove do-install target and non-standard variable HEADERSDIR. The header files are installed in ${PREFIX}/include/cddlib by default. Create a link to ${PREFIX}/include/cdd in post-install target. Some applications expect the headers to be in cdddlib others in cdd, so we should provide both directories.
• Rewrite pkg-descr.

PR: 250878
Submitted by: Moritz Schmitt