Changes to support building on Mac OS X and against Ruby 2.0

This is adding darwin12 to the list of architectures in exconf.rb, and converting from Config to RbConfig.

extconf.rb

@@ -17,13 +17,13 @@
 require 'ruby/lib/version.rb'
 
 prefix_dir = File.join(File.dirname(File.expand_path(__FILE__)), "ruby", "lib")
-with_ruby = File.join(Config::CONFIG["bindir"], Config::CONFIG["RUBY_INSTALL_NAME"])
+with_ruby = File.join(RbConfig::CONFIG["bindir"], RbConfig::CONFIG["RUBY_INSTALL_NAME"])
 
 other_opts = ""
 env = ""
 
-if RUBY_PLATFORM =~ /darwin10/ || RUBY_PLATFORM =~ /darwin11/
-  arch = Config::CONFIG["arch"].split("-")[0]
+if RUBY_PLATFORM =~ /darwin1[0-2]/ 
+  arch = RbConfig::CONFIG["arch"].split("-")[0]
 
   if arch == "universal"
     arch = `uname -m`.strip

ruby.ac

@@ -1,6 +1,6 @@
 dnl Get a key from ruby's configuration table
 AC_DEFUN([RUBY_CONFIG], [
-          $RUBY -rrbconfig -e "puts(Config::CONFIG[['$1']] || '')"])
+          $RUBY -rrbconfig -e "puts(RbConfig::CONFIG[['$1']] || '')"])
 
 AC_DEFUN([RB_INIT_RUBY], [
 
@@ -77,7 +77,7 @@ else
     RUBY_SITELIBDIR=`RUBY_CONFIG(sitelibdir)`
   else
     sitelibdir_no_prefix=`$RUBY -rrbconfig \
-    -e "include Config; \
+    -e "include RbConfig; \
     puts CONFIG[['sitelibdir']].sub(CONFIG[['prefix']], '')"`
     RUBY_SITELIBDIR="${prefix}/${sitelibdir_no_prefix}"
   fi

test/test_rice.rb

@@ -5,8 +5,8 @@ class RiceTest < Test::Unit::TestCase
   # TODO: probably a better way to find this out...
   VERBOSE = ARGV.include?('-v')
 
-  EXEEXT = Config::CONFIG['EXEEXT']
-  RUBY = Config::CONFIG['RUBY_INSTALL_NAME']
+  EXEEXT = RbConfig::CONFIG['EXEEXT']
+  RUBY = RbConfig::CONFIG['RUBY_INSTALL_NAME']
 
   def test_unittest
     run_external_test("./unittest#{EXEEXT}")