gitweb: Use the config file to set repository owner's name.

Now gitweb checks if gitweb.owner exists before trying to get filesystem's
owner.

Allow to use configuration variable gitweb.owner set the repository owner,
it checks the gitweb.owner, if not set it uses filesystem directory's owner.

Useful when we don't want to maintain project list file, and all
repository directories have to have the same owner (for example when the
same SSH account is shared for all projects, using ssh_acl to control
access instead).

Signed-off-by: Bruno Ribas <ribas@c3sl.ufpr.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

gitweb/README

@@ -233,6 +233,10 @@ You can use the following files in repository:
    Displayed in the project summary page. You can use multiple-valued
    gitweb.url repository configuration variable for that, but the file
    takes precendence.
+ * gitweb.owner
+   You can use the gitweb.owner repository configuration variable to set
+   repository's owner. It is displayed in the project list and summary
+   page. If it's not set, filesystem directory's owner is used.
  * various gitweb.* config variables (in config)
    Read description of %feature hash for detailed list, and some
    descriptions.

gitweb/gitweb.perl

@@ -1759,6 +1759,7 @@ sub git_get_project_owner {
 	my $owner;
 
 	return undef unless $project;
+	$git_dir = "$projectroot/$project";
 
 	if (!defined $gitweb_project_owner) {
 		git_get_project_list_from_file();
@@ -1767,8 +1768,11 @@ sub git_get_project_owner {
 	if (exists $gitweb_project_owner->{$project}) {
 		$owner = $gitweb_project_owner->{$project};
 	}
+	if (!defined $owner){
+		$owner = git_get_project_config('owner');
+	}
 	if (!defined $owner) {
-		$owner = get_file_owner("$projectroot/$project");
+		$owner = get_file_owner("$git_dir");
 	}
 
 	return $owner;