Teach --wrap to only indent without wrapping
Teach --wrap to only indent without wrapping

When a zero or negative width is given to "shortlog -w<width>,<in1>,<in2>"
and --format=%[wrap(w,in1,in2)...%], just indent the text by in1 without
wrapping.

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