diff --git a/Documentation/config.txt b/Documentation/config.txt
index c257cdf525..24f9655fef 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -520,7 +520,7 @@ merge.summary::
 merge.tool::
 	Controls which merge resolution program is used by
 	gitlink:git-mergetool[l].  Valid values are: "kdiff3", "tkdiff",
-	"meld", "xxdiff", "emerge", "vimdiff"
+	"meld", "xxdiff", "emerge", "vimdiff", and "opendiff"
 
 merge.verbosity::
 	Controls the amount of output shown by the recursive merge
diff --git a/Documentation/git-mergetool.txt b/Documentation/git-mergetool.txt
index 34288fe08b..add01e855a 100644
--- a/Documentation/git-mergetool.txt
+++ b/Documentation/git-mergetool.txt
@@ -25,7 +25,7 @@ OPTIONS
 -t or --tool=<tool>::
 	Use the merge resolution program specified by <tool>.
 	Valid merge tools are:
-	kdiff3, tkdiff, meld, xxdiff, emerge, and vimdiff.
+	kdiff3, tkdiff, meld, xxdiff, emerge, vimdiff, and opendiff
 +
 If a merge resolution program is not specified, 'git mergetool'
 will use the configuration variable merge.tool.  If the
diff --git a/commit.c b/commit.c
index f1ba972d9a..aa7059c1c6 100644
--- a/commit.c
+++ b/commit.c
@@ -718,14 +718,6 @@ static char *logmsg_reencode(const struct commit *commit,
 	return out;
 }
 
-static char *xstrndup(const char *text, int len)
-{
-	char *result = xmalloc(len + 1);
-	memcpy(result, text, len);
-	result[len] = '\0';
-	return result;
-}
-
 static void fill_person(struct interp *table, const char *msg, int len)
 {
 	int start, end, tz = 0;
diff --git a/diff.c b/diff.c
index 9dfded7664..7bbe7590b2 100644
--- a/diff.c
+++ b/diff.c
@@ -1572,14 +1572,15 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only)
 		enum object_type type;
 		struct sha1_size_cache *e;
 
+		if (size_only && use_size_cache &&
+		    (e = locate_size_cache(s->sha1, 1, 0)) != NULL) {
+			s->size = e->size;
+			return 0;
+		}
+
 		if (size_only) {
-			e = locate_size_cache(s->sha1, 1, 0);
-			if (e) {
-				s->size = e->size;
-				return 0;
-			}
 			type = sha1_object_info(s->sha1, &s->size);
-			if (type < 0)
+			if (use_size_cache && 0 < type)
 				locate_size_cache(s->sha1, 0, s->size);
 		}
 		else {
diff --git a/git-compat-util.h b/git-compat-util.h
index 2c84016ac9..c08688c8f3 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -197,6 +197,19 @@ static inline void *xmalloc(size_t size)
 	return ret;
 }
 
+static inline char *xstrndup(const char *str, size_t len)
+{
+	char *p;
+
+	p = memchr(str, '\0', len);
+	if (p)
+		len = p - str;
+	p = xmalloc(len + 1);
+	memcpy(p, str, len);
+	p[len] = '\0';
+	return p;
+}
+
 static inline void *xrealloc(void *ptr, size_t size)
 {
 	void *ret = realloc(ptr, size);
diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index cbd8d03e64..ba5cc43e5b 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -564,12 +564,6 @@ sub validate_refname {
 	return $input;
 }
 
-# very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
-sub to_utf8 {
-	my $str = shift;
-	return decode("utf8", $str, Encode::FB_DEFAULT);
-}
-
 # quote unsafe chars, but keep the slash, even when it's not
 # correct, but quoted slashes look too horrible in bookmarks
 sub esc_param {
@@ -594,7 +588,7 @@ ($;%)
 	my $str = shift;
 	my %opts = @_;
 
-	$str = to_utf8($str);
+	$str = decode_utf8($str);
 	$str = $cgi->escapeHTML($str);
 	if ($opts{'-nbsp'}) {
 		$str =~ s/ /&nbsp;/g;
@@ -608,7 +602,7 @@ sub esc_path {
 	my $str = shift;
 	my %opts = @_;
 
-	$str = to_utf8($str);
+	$str = decode_utf8($str);
 	$str = $cgi->escapeHTML($str);
 	if ($opts{'-nbsp'}) {
 		$str =~ s/ /&nbsp;/g;
@@ -891,7 +885,7 @@ sub format_subject_html {
 
 	if (length($short) < length($long)) {
 		return $cgi->a({-href => $href, -class => "list subject",
-		                -title => to_utf8($long)},
+		                -title => decode_utf8($long)},
 		       esc_html($short) . $extra);
 	} else {
 		return $cgi->a({-href => $href, -class => "list subject"},
@@ -1126,7 +1120,7 @@ sub git_get_projects_list {
 			if (check_export_ok("$projectroot/$path")) {
 				my $pr = {
 					path => $path,
-					owner => to_utf8($owner),
+					owner => decode_utf8($owner),
 				};
 				push @list, $pr;
 				(my $forks_path = $path) =~ s/\.git$//;
@@ -1156,7 +1150,7 @@ sub git_get_project_owner {
 			$pr = unescape($pr);
 			$ow = unescape($ow);
 			if ($pr eq $project) {
-				$owner = to_utf8($ow);
+				$owner = decode_utf8($ow);
 				last;
 			}
 		}
@@ -1630,7 +1624,7 @@ sub get_file_owner {
 	}
 	my $owner = $gcos;
 	$owner =~ s/[,;].*$//;
-	return to_utf8($owner);
+	return decode_utf8($owner);
 }
 
 ## ......................................................................
@@ -1713,7 +1707,7 @@ sub git_header_html {
 
 	my $title = "$site_name";
 	if (defined $project) {
-		$title .= " - " . to_utf8($project);
+		$title .= " - " . decode_utf8($project);
 		if (defined $action) {
 			$title .= "/$action";
 			if (defined $file_name) {
@@ -1986,7 +1980,7 @@ sub git_print_page_path {
 
 	print "<div class=\"page_path\">";
 	print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
-	              -title => 'tree root'}, to_utf8("[$project]"));
+	              -title => 'tree root'}, decode_utf8("[$project]"));
 	print " / ";
 	if (defined $name) {
 		my @dirname = split '/', $name;
@@ -2604,7 +2598,7 @@ sub git_project_list_body {
 		($pr->{'age'}, $pr->{'age_string'}) = @aa;
 		if (!defined $pr->{'descr'}) {
 			my $descr = git_get_project_description($pr->{'path'}) || "";
-			$pr->{'descr_long'} = to_utf8($descr);
+			$pr->{'descr_long'} = decode_utf8($descr);
 			$pr->{'descr'} = chop_str($descr, 25, 5);
 		}
 		if (!defined $pr->{'owner'}) {
@@ -3636,7 +3630,7 @@ sub git_snapshot {
 		$hash = git_get_head_hash($project);
 	}
 
-	my $filename = to_utf8(basename($project)) . "-$hash.tar.$suffix";
+	my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
 
 	print $cgi->header(
 		-type => "application/$ctype",
diff --git a/http.h b/http.h
index 324fcf4f54..69b6b667d9 100644
--- a/http.h
+++ b/http.h
@@ -6,7 +6,7 @@
 #include <curl/curl.h>
 #include <curl/easy.h>
 
-#if LIBCURL_VERSION_NUM >= 0x070908
+#if LIBCURL_VERSION_NUM >= 0x071000
 #define USE_CURL_MULTI
 #define DEFAULT_MAX_REQUESTS 5
 #endif
diff --git a/perl/Makefile b/perl/Makefile
index 17d004e5a0..0d695fd2f3 100644
--- a/perl/Makefile
+++ b/perl/Makefile
@@ -33,7 +33,7 @@ $(makfile): ../GIT-CFLAGS Makefile
 	echo '	echo $(instdir_SQ)' >> $@
 else
 $(makfile): Makefile.PL ../GIT-CFLAGS
-	'$(PERL_PATH_SQ)' $< PREFIX='$(prefix_SQ)'
+	$(PERL_PATH) $< PREFIX='$(prefix_SQ)'
 endif
 
 # this is just added comfort for calling make directly in perl dir
diff --git a/t/t4200-rerere.sh b/t/t4200-rerere.sh
index 6ba63d7173..c64ebbb2e9 100755
--- a/t/t4200-rerere.sh
+++ b/t/t4200-rerere.sh
@@ -44,7 +44,7 @@ mkdir .git/rr-cache
 
 test_expect_failure 'conflicting merge' 'git pull . first'
 
-sha1=$(sed -e 's/\t.*//' .git/rr-cache/MERGE_RR)
+sha1=$(sed -e 's/	.*//' .git/rr-cache/MERGE_RR)
 rr=.git/rr-cache/$sha1
 test_expect_success 'recorded preimage' "grep ======= $rr/preimage"