Merge branch 'master' of https://github.com/j6t/git-gui

Merge branch 'master' of https://github.com/j6t/git-gui

* 'master' of https://github.com/j6t/git-gui: (21 commits)
  git-gui: ensure own version of git-gui--askpass is used
  git-gui: Allow Tcl 9.0
  git-gui: use -profile tcl8 on encoding conversions
  git-gui: use -profile tcl8 for file input with Tcl 9
  git-gui: themed.tcl: use full namespace for color
  git-gui: remove EOL translation for gets
  git-gui: honor TCLTK_PATH in git-gui--askpass
  git-gui: retire Git Gui.app
  git-gui: fix dependency of GITGUI_MAIN on generator
  git-gui: remove uname_O in Makefile
  git-gui i18n: Remove the locations within the Bulgarian translation
  git-gui i18n: Update Bulgarian translation (557t)
  git-gui: do not mix -translation binary and -encoding
  git-gui: replace encoding binary with iso8859-1
  git-gui: translation binary defines iso8859-1
  git-gui: assure -eofchar {} on all channels
  git-gui: use /cmd/git-gui.exe for shortcut
  git-gui: Windows tk_getSaveFile is not useful for shortcuts
  git-gui: let nice work on Windows
  git-gui: do not add directories to PATH on Windows
  ...