add configure_requires to Build.PL

Build.PL

@@ -6,6 +6,10 @@ my $build = Module::Build->new(
 
   license  => 'gpl',
 
+  configure_requires => {
+    'Module::Build' => 0,
+  },
+
   requires => {
     'Getopt::Long'  => 0,
     'POSIX'         => 0,