Meson support for release.sh

I've been using this for libinput ever since it switched in 2017. now that other repos are switching, it'll be handy for everyone to use the same script.

Note: this uses automake as long as there's a autogen.sh present, otherwise it uses meson.

oh, and I just saw that this overlaps/conflicts !7 (closed)

changed the description

added 6 commits

• 7b255dc3...c99f1a50 - 2 commits from branch xorg/util:master
• ed047425 - release.sh: add support for meson projects
• 9cd2cac2 - release.sh: fix libinput url detection after migration to gitlab
• 71047198 - release.sh: always set UTF8 to satisfy meson
• c6f00930 - release.sh: correct the link to the .announce file

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added 1 commit

• b3966ffe - release.sh: Use 'meson introspect' instead of hand-parsing meson.build

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Pushed a new version that gets the package name/version from meson introspect rather than relying on precise formatting of the meson.build file.

merged

@dbaker you mentioned you had a local hack for this; you might want to check if some of your local stuff still needs to land upstream :)

resolved all threads