Merge branch 'pw/unquote-path-in-git-pm'

Code refactoring.

* pw/unquote-path-in-git-pm:
  t9700: add tests for Git::unquote_path()
  Git::unquote_path(): throw an exception on bad path
  Git::unquote_path(): handle '\a'
  add -i: move unquote_path() to Git.pm

diff --cc git-add--interactive.perl
Simple merge