Interim work on audio import and processing.
Merge branch 'develop3d' of https://github.com/mono/MonoGame into pipeline
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.
WIP for pipeline.
* Added XML documentation to several classes.
Merge branch 'develop3d' of https://github.com/mono/MonoGame into pipeline
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.
Merge branch 'develop3d' of https://github.com/mono/MonoGame into pipeline
Merge branch 'develop3d' into pipeline
Merge branch 'mgcb' of https://github.com/SickheadGames/MonoGame into pipeline
Make OpenGL vertex shader dirty on viewport change

The OpenGL version of MonoGame uses an uniform named "posFixup"
to offset any rendering by a fraction of the viewport size. This
is required because DirectX coordinates refer to pixel centers while
OpenGL coordinates refer to pixel corners.

Whenever the render target is changed, the vertex shader is marked
dirty so that the posFixup uniform gets updated (the viewport
changes whenever the render target is changed).

This change ensures the posFixup uniform is updated whenever the
viewport changes, not only when it is changed through a render
target change.
Set IsMouseVisible to true by default as like in WindowsGL version. (https://github.com/mono/MonoGame/pull/837 - #c45d69c)
Fixed SetPosition for windesktop so that it correctly position with PointToScreen.
This makes use of the offsetInBytes parameter in SetData and allows for reuse of allocated GPU memory.
Fix single sided stencil

When not using TwoSidedStencilMode the same sttings must apply to both
FrontFace and BackFace.

This fixed a transition that creates a stencil mask and happened to be
CounterClockWise. Resualts are now same as XNA.
Merge pull request #1193 from nkast/nkastBranch2

Fix single sided stencil
Merge branch 'develop3d' of https://github.com/mono/MonoGame into pipeline
Fixed a problem for the 3.0 release in linux.
Removed MonoDevelop AddIn from the installer. It can be installed separately in monodevelop itself.