More flexible memory manager (#307)

* Keep track mapped buffers with fixed offsets

* Started rewriting the memory manager

* Initial support for MapPhysicalMemory and UnmapPhysicalMemory, other tweaks

* MapPhysicalMemory/UnmapPhysicalMemory support, other tweaks

* Rebased

* Optimize the map/unmap physical memory svcs

* Integrate shared font support

* Fix address space reserve alignment

* Some fixes related to gpu memory mapping

* Some cleanup

* Only try uploading const buffers that are really used

* Check if memory region is contiguous

* Rebased

* Add missing count increment on IsRegionModified

* Check for reads/writes outside of the address space, optimize translation with a tail call

Ryujinx.Graphics/Gal/OpenGL/OGLPipeline.cs

@@ -279,7 +279,7 @@ namespace Ryujinx.Graphics.Gal.OpenGL
             {
                 if (Stage != null)
                 {
-                    foreach (ShaderDeclInfo DeclInfo in Stage.UniformUsage)
+                    foreach (ShaderDeclInfo DeclInfo in Stage.ConstBufferUsage)
                     {
                         long Key = New.ConstBufferKeys[(int)Stage.Type][DeclInfo.Cbuf];