bump spidermonkey to a recent revision

This gives us tracemonkey/JIT capable version. As the comment says, there are no proper releases

Formula/spidermonkey.rb

@@ -1,58 +1,50 @@
 require 'formula'
 
 class Spidermonkey <Formula  
-  url "http://ftp.mozilla.org/pub/mozilla.org/js/js-1.7.0.tar.gz"
+  # There are no proper releases of spidermonkey. So pick a specific/constant
+  # revision:  r35345
+  url 'http://hg.mozilla.org/tracemonkey/archive/57a6ad20eae9.tar.gz'
+  md5 '4a143399f69d6509bd980073096af6d4'
+
+  version '1.9.2'
+
   homepage 'https://developer.mozilla.org/en/SpiderMonkey'
-  md5 '5571134c3863686b623ebe4e6b1f6fe6'
+
+  head 'hg://http://hg.mozilla.org/tracemonkey'
 
   depends_on 'readline'
-
-  def patches
-    DATA
-  end
+  depends_on 'autoconf213'
 
   def install
-    ENV.j1
 
-    # Spidermonkey hardsets the CC and CCC environment variables to cc and g++
-    # but homebrew uses compiler flags that aren't available in Apple's default cc (version 4.0.1)
-    # instead use the compilers chosen by homebrew and set in the CC and CXX environment variables
-    inreplace "src/config/Darwin.mk", 'CC = cc', "CC = #{ENV['CC']}"
-    inreplace "src/config/Darwin.mk", 'CCC = g++', "CCC = #{ENV['CXX']}"
-
-    # aparently this flag causes the build to fail for ivanvc on 10.5 with a
-    # penryn (core 2 duo) CPU. So lets be cautious here and remove it.
-    ENV['CFLAGS'] = ENV['CFLAGS'].gsub(/-msse[^\s]+/, '')
-
-    Dir.chdir "src" do
-      system "make JS_DIST='#{prefix}' DEFINES=-DJS_C_STRINGS_ARE_UTF8 -f Makefile.ref"
-      system "make JS_DIST='#{prefix}' -f Makefile.ref export"
-      system "ranlib #{lib}/libjs.a"
+    if MACOS_VERSION == 10.5
+      # aparently this flag causes the build to fail for ivanvc on 10.5 with a
+      # penryn (core 2 duo) CPU. So lets be cautious here and remove it.
+      # It might not be need with newer spidermonkeys anymore tho.
+      ENV['CFLAGS'] = ENV['CFLAGS'].gsub(/-msse[^\s]+/, '')
     end
+
+    Dir.chdir "js/src" do
+      system "autoconf213"
+      # Remove the broken *(for anyone but FF) install_name
+      inreplace "config/rules.mk", "-install_name @executable_path/$(SHARED_LIBRARY) ", ""
+    end
+
+    FileUtils.mkdir "brew-build";
+
+    Dir.chdir "brew-build" do
+      system "../js/src/configure", "--prefix=#{prefix}",
+                                    "--enable-readline"
+
+      inreplace "js-config", /JS_CONFIG_LIBS=.*?$/, "JS_CONFIG_LIBS=''"
+
+      # Can't do `make install` right off the bat sadly
+      system "make"
+      system "make install"
+
+      # The `js` binary ins't installed. Lets do that too, eh?
+      bin.install "shell/js"
+    end
+
   end
 end
-
-
-__END__
---- a/src/jsprf.c	2009-07-26 12:32:01.000000000 -0700
-+++ b/src/jsprf.c	2009-07-26 12:33:12.000000000 -0700
-@@ -58,6 +58,8 @@
- */
- #ifdef HAVE_VA_COPY
- #define VARARGS_ASSIGN(foo, bar)        VA_COPY(foo,bar)
-+#elif defined(va_copy)
-+#define VARARGS_ASSIGN(foo, bar)        va_copy(foo,bar)
- #elif defined(HAVE_VA_LIST_AS_ARRAY)
- #define VARARGS_ASSIGN(foo, bar)        foo[0] = bar[0]
- #else
-
---- a/src/rules.mk	2006-07-06 22:12:02.000000000 -0400
-+++ b/src/rules.mk	2009-10-16 00:12:09.000000000 -0400
-@@ -115,7 +115,7 @@
- 	$(RANLIB) $@
- 
- $(SHARED_LIBRARY): $(LIB_OBJS)
--	$(MKSHLIB) -o $@ $(LIB_OBJS) $(LDFLAGS) $(OTHER_LIBS)
-+	$(MKSHLIB) -o $@ $(LIB_OBJS) $(LDFLAGS) $(OTHER_LIBS) -install_name $(JS_DIST)/lib/$(notdir $@)
- endif
- endif