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

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

* 'maint' of git://repo.or.cz/git-gui:
  git-gui: Focus insertion point at end of strings in repository chooser
  git-gui: Avoid hardcoded Windows paths in Cygwin package files
  git-gui: Default TCL_PATH to same location as TCLTK_PATH
  git-gui: Paper bag fix error dialogs opening over the main window
  git-gui: Ensure error dialogs always appear over all other windows
  git-gui: relax "dirty" version detection
  git-gui: support Git Gui.app under OS X 10.5