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>

git-merge-one-file.sh

@@ -88,7 +88,7 @@ case "${1:-.}${2:-.}${3:-.}" in
 		# remove lines that are unique to ours.
 		orig=`git-unpack-file $2`
 		sz0=`wc -c <"$orig"`
-		diff -u -La/$orig -Lb/$orig $orig $src2 | git-apply --no-add 
+		diff -u -La/$orig -Lb/$orig $orig $src2 | git-apply --no-add
 		sz1=`wc -c <"$orig"`
 
 		# If we do not have enough common material, it is not