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>

strbuf.c

@@ -39,4 +39,3 @@ void read_line(struct strbuf *sb, FILE *fp, int term) {
 		sb->eof = 1;
 	strbuf_end(sb);
 }
-