Don't check current display for extensions, build all.

diff -up OpenGL-0.62/Makefile.PL.dist OpenGL-0.62/Makefile.PL
--- OpenGL-0.62/Makefile.PL.dist	2009-12-11 01:10:00.000000000 +0100
+++ OpenGL-0.62/Makefile.PL	2010-01-07 13:00:26.000000000 +0100
@@ -579,9 +579,9 @@ my $build_config =
   {
     FILES =>
       "Config.pm ".
-      "utils/glversion.txt ".
-      "utils/glversion$Config{exe_ext} ".
-      "utils/glversion$Config{obj_ext}"
+      "utils/glversion.txt "
+      #"utils/glversion$Config{exe_ext} ".
+      #"utils/glversion$Config{obj_ext}"
   }
 };
 
@@ -790,6 +790,7 @@ sub get_extensions
     print "GLUT not found\n";
   }
 
+=cut
   # Platform-specific makefiles for glversion
   my $make_ver;
   if ($IS_MINGW)
@@ -848,7 +849,9 @@ sub get_extensions
      print "get_extensions: no extensions found in $glv_file\n" if $verbose;
      return '';
   }
-
+=cut
+  use Config;
+  my $gldata = { };
 
   # Parse glext_procs.h file
   return '' if (!open(GLEXT,"glext_procs.h"));
@@ -867,10 +870,12 @@ sub get_extensions
 
   # Create gl_exclude.h
   die "Unable to write to $exc_file\n" if (!open(GLEXC,">$exc_file"));
+=cut
   print GLEXC "// OpenGL Extension Exclusions - may be modified before building.\n";
   print GLEXC "//\n";
   print GLEXC "// Generated for ".$gldata->{VENDOR}.", ".$gldata->{RENDERER}."\n";
   print GLEXC "// OpenGL v".$gldata->{VERSION}.", using ";
+=cut
 
   # Fix GLUT flags based on results
   if ($gldata->{GLUT} > 0)