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>
diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index 42060ef..e9832d2 100755
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -197,7 +197,7 @@
 # ... validate new files,
 foreach my $f (@afiles) {
     if (defined ($cvsstat{$f}) and $cvsstat{$f} ne "Unknown") {
- 	$dirty = 1;
+	$dirty = 1;
 	warn "File $f is already known in your CVS checkout -- perhaps it has been added by another user. Or this may indicate that it exists on a different branch. If this is the case, use -f to force the merge.\n";
 	warn "Status was: $cvsstat{$f}\n";
     }