Run t/uni/*.t t/mro/*.t t/lib/*.t fully in parallel.

p4raw-id: //depot/perl@34176

t/harness

@@ -137,10 +137,13 @@ if (@ARGV) {
 	push @seq, <base/*.t>;
 
 	push @seq, _glob_and_parallelise qw(comp cmd run io);
-	my @next = qw(op uni mro lib);
+	my @next = qw(uni mro lib);
 	push @next, 'japh' if $torture;
 	push @next, 'win32' if $^O eq 'MSWin32';
-	push @seq, _glob_and_parallelise @next;
+	push @seq, { par => [
+			     {seq => [ glob "op/*.t" ]},
+			     map { glob "$_/*.t" } @next
+			    ] };
 
 	my @last;
 	use Config;