Prep for git plugin 4.4.0 release
Prep for git plugin 4.4.0 release

Includes git tool chooser to automatically choose JGit for smaller
repositories which do not require options that are only implemented in
command line git.

martinda/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin,martinda/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,jenkinsci/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin,martinda/git-plugin