When optional paths arguments are given, git-clean passes them
to underlying git-ls-files; with this, you can say:

	git clean 'temp-*'

to clean only the garbage files whose names begin with 'temp-'.
Signed-off-by: NJunio C Hamano <junkio@cox.net>
Signed-off-by: NPavel Roskin <proski@gnu.org>