Deprecate usage of git-var -l for getting config vars list

This has been an unfortunate sideway in the git API evolution.
We use git-repo-config for all the other .git/config interaction
so let's also use git-repo-config -l for the variable listing.

Signed-off-by: Petr Baudis <pasky@suse.cz>
diff --git a/Documentation/git-var.txt b/Documentation/git-var.txt
index 379571e..a5b1a0d 100644
--- a/Documentation/git-var.txt
+++ b/Documentation/git-var.txt
@@ -19,7 +19,8 @@
 -l::
 	Cause the logical variables to be listed. In addition, all the
 	variables of the git configuration file .git/config are listed
-	as well.
+	as well. (However, the configuration variables listing functionality
+	is deprecated in favor of `git-repo-config -l`.)
 
 EXAMPLE
 --------
diff --git a/git-cvsserver.perl b/git-cvsserver.perl
index 7d3f78e..0b37d26 100755
--- a/git-cvsserver.perl
+++ b/git-cvsserver.perl
@@ -171,11 +171,11 @@
        return 0;
     }
 
-    my @gitvars = `git-var -l`;
+    my @gitvars = `git-repo-config -l`;
     if ($?) {
-       print "E problems executing git-var on the server -- this is not a git repository or the PATH is not set correcly.\n";
+       print "E problems executing git-repo-config on the server -- this is not a git repository or the PATH is not set correcly.\n";
         print "E \n";
-        print "error 1 - problem executing git-var\n";
+        print "error 1 - problem executing git-repo-config\n";
        return 0;
     }
     foreach my $line ( @gitvars )