Update project URL.
Also:
- Eliminate unnecessary BRs and Rs.
- Add -status patch to fix a segfault.
- Build with openblas and glpk support.
- Eliminate rpath from the library.
- Force libtool to not defeat -Wl,--as-needed.
- Be explicit about library versions as required by latest guidelines.
- Filter out unnecessary Libs values from pkgconfig files.
- Package doxygen tag file to enable cross-linking.