Merge branch 'maint-1.5.1' into maint

* maint-1.5.1:
  Fix git-svn to handle svn not reporting the md5sum of a file, and test.
  More echo "$user_message" fixes.
  Add tests for the last two fixes.
  git-commit: use printf '%s\n' instead of echo on user-supplied strings
  git-am: use printf instead of echo on user-supplied strings
  Documentation: Add definition of "evil merge" to GIT Glossary
  Replace the last 'dircache's by 'index'
  Documentation: Clean up links in GIT Glossary

1 files changed, 1 insertions, 1 deletions

diff --git a/git-svn.perl b/git-svn.perl
index eda9969f50..fa46236ae8 100755
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -2477,7 +2477,7 @@ sub close_file {
 		$md5->addfile($fh);
 		my $got = $md5->hexdigest;
 		die "Checksum mismatch: $path\n",
-		    "expected: $exp\n    got: $got\n" if ($got ne $exp);
+		    "expected: $exp\n    got: $got\n" if (defined $exp && $got ne $exp);
 		sysseek($fh, 0, 0) or croak $!;
 		if ($fb->{mode_b} == 120000) {
 			sysread($fh, my $buf, 5) == 5 or croak $!;