Add ports of DragonEgg version 3.3 for GCC 4.6 and 4.7.

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diff --git a/lang/dragonegg46-33/files/patch-README b/lang/dragonegg46-33/files/patch-README
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+
+$FreeBSD$
+
+--- README.orig
++++ README
+@@ -1,74 +1,9 @@
+ ----------------------
+-- BUILD INSTRUCTIONS -
+-----------------------
+-
+-Prerequisites
+--------------
+-
+-The dragonegg plugin works with gcc 4.5, 4.6, 4.7 or 4.8, so you will need to
+-have one of these installed.  Many linux distributions ship one or both of them,
+-perhaps as an addon package; binaries can be downloaded for most platforms.
+-Otherwise you can always build gcc yourself.  Plugin support (--enable-plugin)
+-needs to be enabled in gcc, but since it is enabled by default on most platforms
+-you usually won't need to do this explicitly.
+-
+-Step 0: Build and install llvm
+-------------------------------
+-
+-I'm assuming anyone reading this knows how to build and install llvm.  The
+-version of llvm must match the version of the plugin, so if you are building
+-dragonegg-3.0 then you should use llvm-3.0, while if you are building the
+-development version of dragonegg then use the development version of llvm.
+-
+-
+-Step 1: Build the plugin
+-------------------------
+-
+-Build the plugin like this:
+-  GCC=PATH_TO_INSTALLED_GCC make
+-This command should be executed in the directory containing this README.
+-
+-The plugin needs to know about the version of gcc it will be loaded into, which
+-is why you need to specify your version of gcc 4.5/4.6 via the GCC variable like
+-this.  For example, if the version of gcc you want to load the plugin into is
+-/usr/local/gcc-4.6/bin/gcc, then you should do
+-  GCC=/usr/local/gcc-4.6/bin/gcc make
+-If you don't set the GCC variable then by default "gcc" is used, so you
+-can just do
+-  make
+-if you plan to use the plugin with whatever version of gcc is in your path.
+-
+-The plugin makes use of various gcc headers that are usually shipped with gcc.
+-However some linux distributions, for example debian and ubuntu, have split the
+-headers out of gcc into a separate package.  So if you get errors along the
+-lines of "config.h not found", check whether gcc headers like "config.h" and
+-"tree.h" are installed.  On debian the package containing headers is called
+-gcc-4.5-plugin-dev or gcc-4.6-plugin-dev.
+-
+-The plugin is compiled using the system compiler, and not with the gcc specified
+-in the GCC variable (which wouldn't work if it is a cross compiler).  If you
+-want to also compile the plugin with your copy of gcc 4.5/4.6, you can do:
+-  CXX=PATH_TO_INSTALLED_GCC GCC=PATH_TO_INSTALLED_GCC make
+-
+-The build system runs the "llvm-config" program (which should be in your path if
+-you installed llvm properly in step 0) to find out about the copy of LLVM you
+-installed, so there is no need to tell the build system explicitly about LLVM.
+-If llvm-config is not in your path then you can specify where to find it using
+-the LLVM_CONFIG variable.
+-
+-The end result of the build is a shared library, dragonegg.so.
+-
+-If you want the dragonegg plugin to be able to load LLVM plugins then pass
+-ENABLE_LLVM_PLUGINS=1 to make.
+-
+-
+-----------------------
+ - USAGE INSTRUCTIONS -
+ ----------------------
+ 
+-Run gcc as usual, but pass -fplugin=./dragonegg.so as an extra command line
+-argument.  Make sure you use the gcc you built dragonegg against (see step 1)!
+-
++Run %CC% as usual, but pass -fplugin=%%PLUGINPATH%%
++as an extra command line argument.
+ 
+ ------------------
+ - USEFUL OPTIONS -