Show usage string for 'git grep -h'
Show usage string for 'git grep -h'

Clarification: the following description only talks about "git
grep -h" without any other options and arguments.

Such a change cannot be breaking backward compatibility.  "grep
-h" cannot be asking for suppressing filenames, as there is no
match pattern specified.

Signed-off-by: Jonathan Nieder <b57189c5f2fd5b3daf3350a77fde90def1080fa5@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git