Merge branch 'ao/p4-has-branch-prefix-fix' into maint

A bug, which caused "git p4" while running under verbose mode to report paths that are omitted due to branch prefix incorrectly, has been fixed; the command said "Ignoring file outside of prefix" for paths that are _inside_. * ao/p4-has-branch-prefix-fix: git-p4: correct hasBranchPrefix verbose output