[gmp] correct supports field to run CI for other platforms

[Neumann-A]

No description provided.

[NancyLi1013]

This PR is just to test, right? @Neumann-A

[Neumann-A]

@NancyLi1013. Not really. The supports field is wrong in gmp and needs fixing. The CI errors is just fallout of the fact that gmp is now actually considered by CI. The errors in mpfr in linux/osx seems to need a VM update but I cannot test what is needed locally.

[PhoebeHui]

I will take a look at the CI test failures, @Neumann-A, thanks for fixing this issue!

[PhoebeHui]

mpfr:x64-linux: after I installed 'texinfo' package, it passed.
build-x64-linux-dbg-err.log:

/mnt/vcpkg-ci/buildtrees/mpfr/src/mpfr-4-8955d4bc66.clean/missing: 81: /mnt/vcpkg-ci/buildtrees/mpfr/src/mpfr-4-8955d4bc66.clean/missing: makeinfo: not found
WARNING: 'makeinfo' is missing on your system.
         You should only need it if you modified a '.texi' file, or
         any other file indirectly affecting the aspect of the manual.
         You might want to install the Texinfo package:
         <http://www.gnu.org/software/texinfo/>
         The spurious makeinfo call might also be the consequence of
         using a buggy 'make' (AIX, DU, IRIX), in which case you might
         want to install GNU make:
         <http://www.gnu.org/software/make/>
make[1]: *** [.././../src/mpfr-4-8955d4bc66.clean/doc/mpfr.info] Error 127
make: *** [all-recursive] Error 1

mpfr:x64-osx: AX_PTHREAD is missing, same failures with #13081 (comment), it requires 'autoconf-archive' package on test machine.

autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal --force -I m4
aclocal: warning: couldn't open directory 'm4': No such file or directory
autoreconf: configure.ac: tracing
autoreconf: running: glibtoolize --copy --force
autoreconf: running: /usr/local/Cellar/autoconf/2.69/bin/autoconf --force
configure:14268: error: possibly undefined macro: AX_PTHREAD
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
autoreconf: /usr/local/Cellar/autoconf/2.69/bin/autoconf failed with exit status: 1

mpfr:x86-windows: it requires to update port version

Error: While reading versions for port gmp from file: C:\a\1\s\versions\g-\gmp.json
       File declares version `6.2.1#3` with SHA: 079a172e3fb283db5e4983f392758553aecea189
       But local port with the same verion has a different SHA: 3b7459d7ea886b86c9c80890c0b697df9df3cce1
       Please update the port's version fields and then run:
           vcpkg x-add-version gmp
       to add a new version.

To attempt to resolve all errors at once, run:
    vcpkg x-add-version --all

[PhoebeHui]

@ras0219-msft, could you help review and merge this PR?

[ras0219-msft]

LGTM, thanks!