Added content building classes.
Added solution for windows content pipeline.
Added project for the MonoGame Content Builder command line tool.
First pass at parsing the .contentproj and executing the build.
Dropped the platform from the name of iOS MonoGame assemblies for all configurations.
Removed platform name from all MonoGame.Framework assemblies and added the platform to the output path.
Updating assembly name and paths for project templates.
Windows Project update.
Update for assembly name change. Installer works for VS2010. Still need to test and fix things for other platforms.
Added SoundEffect.FromStream
Removed spaces from Windows GL build path.
Updated installer script. Confirmed to work on Windows 8, Windows Phone and Windows GL.
Implemented an internal ctor that accepts a Stream and set FromStream to use that for Desktops.

I have FromStream throw NotImplementedEX for Android and everything else processes like normal.
We better handle exceptions in content processing.
PipelineManager expects absolute assembly paths now.
We now use the XNAGSv4 environment variable to resolve XNA assemblies.
We now try to load assemblies from the GAC if possible.
The output folder name is now specified on the command line.
Replaced 'WindowsGL' output path with simply 'Windows'... Lidgren is not GL specific.
Fixed some bad file references in installer.
Fixed bad assembly reference.
Fixed bad assembly reference.
Buffers are write-only on ES 2.0
Issue #1127 raised the problem of trying to read data from vertex buffers.  Turns out the GL_OES_mapbuffer extension is write-only. Therefore I have added NotSupportedException to VertexBuffer.GetData() and IndexBuffer.GetData() for ES platforms.
Removed excessive debug logs from model load
There were quite a few Debug.WriteLine() calls in the model loader that did not need to be there and produced excessive logs, especially on Android where the logs are duplicated in adb output.  Also removed a 'colourful' debug log from LzxDecoder.
Merge pull request #1130 from slygamer/remove-model-debug-logs

Removed excessive debug logs from model load