Merge branch 'master' of https://github.com/prati0100/git-gui

* 'master' of https://github.com/prati0100/git-gui:
  git-gui: add hotkey to toggle "Amend Last Commit"
  git-gui: add horizontal scrollbar to commit buffer
  git-gui: convert new/amend commit radiobutton to checkbutton
  git-gui: add hotkeys to set widget focus
  git-gui: allow undoing last revert
  git-gui: return early when patch fails to apply
  git-gui: allow reverting selected hunk
  git-gui: allow reverting selected lines

diff --cc git-gui/git-gui.sh
Simple merge

diff --cc git-gui/lib/checkout_op.tcl
Simple merge

diff --cc git-gui/lib/commit.tcl
Simple merge

diff --cc git-gui/lib/diff.tcl
Simple merge

diff --cc git-gui/lib/index.tcl
Simple merge