Add support for scheme https://www.gnu.org/software/autoconf-archive/ax_compare_version.html

[pombredanne]

See https://www.gnu.org/software/autoconf-archive/ax_compare_version.html

[PrajwalaY26]

Hi @pombredanne,
I’d like to work on this issue and submit a PR adding support for the AX_COMPARE_VERSION scheme.
If this is okay, could you please assign it to me? Thanks!