re-enable executable quoting removed in 1.99.43.

Remove special-casing of sxq for Windows, as VIM does that now.

Always call shellescape() on the executable name in s:Executable().
apply "edit" during 2-parameter VCSVimDiff
handle ignored files in GetBufferInfo
Merge branch 'master' of git://repo.or.cz/vcscommand

Conflicts:
	plugin/vcsbzr.vim
Support fot the changes displayed in-place.