War on whitespace

This uses "git-apply --whitespace=strip" to fix whitespace errors that have
crept in to our source files over time.  There are a few files that need
to have trailing whitespaces (most notably, test vectors).  The results
still passes the test, and build result in Documentation/ area is unchanged.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/fetch-options.txt

@@ -52,4 +52,3 @@
 	Deepen the history of a 'shallow' repository created by
 	`git clone` with `--depth=<depth>` option (see gitlink:git-clone[1])
 	by the specified number of commits.
-