Merge branch 'jk/status-z-short-fix' into maint-2.51

The "--short" option of "git status" that meant output for humans
and "-z" option to show NUL delimited output format did not mix
well, and colored some but not all things.  The command has been
updated to color all elements consistently in such a case.

* jk/status-z-short-fix:
  status: make coloring of "-z --short" consistent