rakudo build should honor sub-locks for moar, jvm

Author: TimToady

build-scripts/rebuild-rakudo.pl

@@ -1,6 +1,4 @@
 #!/usr/bin/env perl
 
-my $loc = $0;
-$loc =~ s/\.pl$//;
-system "$loc-moar.pl", @ARGV;
-system "$loc-jvm.pl", @ARGV;
+system './build.pl rakudo-moar';
+system './build.pl rakudo-jvm';