Merge branch 'maint' of git://repo.or.cz/git-gui into maint

* 'maint' of git://repo.or.cz/git-gui: git-gui: Fix diff parsing for lines starting with "--" or "++" git-gui: Fix string escaping in po2msg.sh git gui: show diffs with a minimum of 1 context line git-gui: update all remaining translations to French. git-gui: Update french translation