gitweb: configurable home link string

I've always found difficult to figure out git URL for clone from
gitweb URL because git:// and http:// are different on many site
including kernel.org.

I've found this enhancement at http://dev.laptop.org/git when I was on
git channel, and thought that it'd be nice if all public gitweb site
show it's git URL on its page.

This patch allow us to change the home link string.  The current
default is "projects" as we all see on gitweb now.

ie. kernel.org might set this variable to "git://git.kernel.org/pub/scm/"

Signed-off-by: Yasushi SHOJI <yashi@atmark-techno.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Makefile

@@ -123,6 +123,7 @@ GIT_PYTHON_DIR = $(prefix)/share/git-core/python
 
 # default configuration for gitweb
 GITWEB_CONFIG = gitweb_config.perl
+GITWEB_HOME_LINK_STR = projects
 GITWEB_SITENAME =
 GITWEB_PROJECTROOT = /pub/git
 GITWEB_LIST =
@@ -617,6 +618,7 @@ gitweb/gitweb.cgi: gitweb/gitweb.perl
 	    -e 's|++GIT_VERSION++|$(GIT_VERSION)|g' \
 	    -e 's|++GIT_BINDIR++|$(bindir)|g' \
 	    -e 's|++GITWEB_CONFIG++|$(GITWEB_CONFIG)|g' \
+	    -e 's|++GITWEB_HOME_LINK_STR++|$(GITWEB_HOME_LINK_STR)|g' \
 	    -e 's|++GITWEB_SITENAME++|$(GITWEB_SITENAME)|g' \
 	    -e 's|++GITWEB_PROJECTROOT++|$(GITWEB_PROJECTROOT)|g' \
 	    -e 's|++GITWEB_LIST++|$(GITWEB_LIST)|g' \

gitweb/gitweb.perl

@@ -36,6 +36,9 @@ our $git_temp = "/tmp/gitweb";
 # target of the home link on top of all pages
 our $home_link = $my_uri;
 
+# string of the home link on top of all pages
+our $home_link_str = "++GITWEB_HOME_LINK_STR++";
+
 # name of your site or organization to appear in page titles
 # replace this with something more descriptive for clearer bookmarks
 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
@@ -974,7 +977,7 @@ EOF
 	      "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
 	      "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
 	      "</a>\n";
-	print $cgi->a({-href => esc_param($home_link)}, "projects") . " / ";
+	print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
 	if (defined $project) {
 		print $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, esc_html($project));
 		if (defined $action) {