repo status just prints "# on branch oprofile" if you have branched
in clean status. This doesn't really tell which branch is meant.
Instead we can use the same syntax with modified gits which will
give us detailed information.
Change-Id: I55fe5154d278e10a814281dd2ba501ec6e956730
If there is nothing output at all, tell the user the working tree is
completely clean. It just gives them a bit more of a warm-fuzzy
feeling knowing repo and until the end. It also more closely
matches with the output of git status.
Signed-off-by: Shawn O. Pearce <sop@google.com>
