Merge branch 'maint'

* maint:
  Start preparing for 1.5.1.2
  git-svn: quiet some warnings when run only with --version/--help
  git-svn: respect lower bound of -r/--revision when following parent

Conflicts:

	RelNotes

Documentation/RelNotes-1.5.1.2.txt

@@ -0,0 +1,37 @@
+GIT v1.5.1.2 Release Notes (draft)
+==========================
+
+Fixes since v1.5.1.1
+--------------------
+
+* Bugfixes
+
+  - "git diff a/ b/" incorrectly fell in "diff between two
+    filesystem objects" codepath, when the user most likely
+    wanted to limit the extent of output to two tracked
+    directories.
+
+  - git-quiltimport had the same bug as we fixed for
+    git-applymbox in v1.5.1.1 -- it gave an alarming "did not
+    have any patch" message (but did not actually fail and was
+    harmless).
+
+  - various git-svn fixes.
+
+  - Sample update hook incorrectly always refused requests to
+    delete branches through push.
+
+  - git-blame on a very long working tree path had buffer
+    overrun problem.
+
+* Documentation updates
+
+  - Various documentation updates from J. Bruce Fields, Frank
+    Lichtenheld, Alex Riesen and others.  Andrew Ruder started a
+    war on undocumented options.
+
+---
+exec >/var/tmp/1
+O=v1.5.1.1-31-g0220f1e
+echo O=`git describe refs/heads/maint`
+git shortlog --no-merges $O..refs/heads/maint

git-svn.perl

@@ -168,14 +168,14 @@ for (my $i = 0; $i < @ARGV; $i++) {
 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
 
 read_repo_config(\%opts);
-Getopt::Long::Configure('pass_through') if $cmd eq 'log';
+Getopt::Long::Configure('pass_through') if ($cmd && $cmd eq 'log');
 my $rv = GetOptions(%opts, 'help|H|h' => \$_help, 'version|V' => \$_version,
                     'minimize-connections' => \$Git::SVN::Migration::_minimize,
                     'id|i=s' => \$Git::SVN::default_ref_id,
                     'svn-remote|remote|R=s' => sub {
                        $Git::SVN::no_reuse_existing = 1;
                        $Git::SVN::default_repo_id = $_[1] });
-exit 1 if (!$rv && $cmd ne 'log');
+exit 1 if (!$rv && $cmd && $cmd ne 'log');
 
 usage(0) if $_help;
 version() if $_version;
@@ -1682,7 +1682,10 @@ sub find_parent_branch {
 	}
 	my ($r0, $parent) = $gs->find_rev_before($r, 1);
 	if (!defined $r0 || !defined $parent) {
-		$gs->fetch(0, $r);
+		my ($base, $head) = parse_revision_argument(0, $r);
+		if ($base <= $r) {
+			$gs->fetch($base, $r);
+		}
 		($r0, $parent) = $gs->last_rev_commit;
 	}
 	if (defined $r0 && defined $parent) {