Merge branch 'js/git-gui-msgfmt-on-windows' into maint

Because recent Git for Windows do come with a real msgfmt, the build procedure for git-gui has been updated to use it instead of a hand-rolled substitute. * js/git-gui-msgfmt-on-windows: git-gui (MinGW): make use of MSys2's msgfmt git gui: allow for a long recentrepo list git gui: de-dup selected repo from recentrepo history git gui: cope with duplicates in _get_recentrepo git-gui: remove duplicate entries from .gitconfig's gui.recentrepo