import and adapot gen-moar-runner.pl from nqp

pretty pointless so far, because we do not get that far in the compilation.

tools/build/Makefile-Moar.in

@@ -246,8 +246,8 @@ $(SETTING_MOAR): $(PERL6_MOAR) $(PERL6_B_MOAR) $(M_CORE_SOURCES)
 	@echo "The following step can take a long time, please be patient."
 	$(RUN_PERL6) --setting=NULL --optimize=3 --target=mbc --stagestats --output=$(SETTING_MOAR) src/gen/m-CORE.setting
 
-$(M_RUNNER):
-	$(PERL) tools/build/create-moar-runner.pl dev . $(PREFIX)
+$(M_RUNNER): tools/build/gen-moar-runner.pl $(PERL6_MOAR)
+	$(PERL) tools/build/gen-moar-runner.pl $(MOAR) .
 
 ##  testing targets
 blib/Test.moarvm: lib/Test.pm $(PERL6_MOAR) $(SETTING_MOAR) $(M_RUNNER)

tools/build/gen-moar-runner.pl

@@ -0,0 +1,31 @@
+#!/usr/bin/perl
+# Copyright (C) 2013, The Perl Foundation.
+
+use strict;
+use warnings;
+use 5.008;
+use File::Spec;
+
+my ($moar, $libpath) = @ARGV;
+
+if ($^O eq 'MSWin32') {
+    my $install_to = 'perl6-m.bat';    
+    open my $fh, ">", $install_to
+        or die "Could not open $install_to: $!";
+    printf q[@ "%s" --libpath="%s" perl6.moarvm %*] . "\n",
+            $libpath, $moar;
+    close $fh
+        or die "Could not close $install_to: $!";
+}
+else {
+    my $install_to = 'perl6-m';
+    open my $fh, ">", $install_to
+        or die "Could not open $install_to: $!";
+    printf $fh <<'EOS', $moar, $libpath;
+#!/bin/sh
+exec %s --libpath=%s perl6.moarvm "$@"
+EOS
+    close $fh
+        or die "Could not close $install_to: $!";
+    chmod 0755, $install_to;
+}