builtin-add: warn on unmatched pathspecs
builtin-add: warn on unmatched pathspecs

This is in the same spirit as what bba319b5 and 45e48120 tried
to do to help users.  A command such as "git add Documentaiton"
with misspelled pathspecs would give a friendly reminder with
this.

Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@osdl.org>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

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