Makefile: exclude contrib from FIND_SOURCE_FILES

When you're working on the git project, you're unlikely to
care about random bits in contrib/ (e.g., you would not want
to jump to the copy of xmalloc in the wincred credential
helper). Nobody has really complained because there are
relatively few C files in contrib.

Now that we're matching shell scripts, too, we get quite a
few more hits, especially in the obsolete contrib/examples
directory. Looking for usage() should turn up the one in
git-sh-setup, not in some long-dead version of git-clone.

Let's just exclude all of contrib. Any specific projects
there which are big enough to want tags can generate them
separately.

Signed-off-by: Jeff King <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: peff

Makefile

@@ -2154,10 +2154,12 @@ FIND_SOURCE_FILES = ( \
 		'*.[hcS]' \
 		'*.sh' \
 		':!*[tp][0-9][0-9][0-9][0-9]*' \
+		':!contrib' \
 		2>/dev/null || \
 	$(FIND) . \
 		\( -name .git -type d -prune \) \
 		-o \( -name '[tp][0-9][0-9][0-9][0-9]*' -prune \) \
+		-o \( -name contrib -type d -prune \) \
 		-o \( -name build -type d -prune \) \
 		-o \( -name 'trash*' -type d -prune \) \
 		-o \( -name '*.[hcS]' -type f -print \) \