D3D: Implemented cache for dynamic render states
D3D: Moved render state cache into separate source files.
Refactored  StateCache::Get() to early out for narrower indentation.
Added comments to clarify ownership of objects returned by  StateCache::Get().
D3D: State cache now uses BitField to define packed render states
D3D: moved render state cache implementation to D3DState.h/cpp
D3D: Fixed uninitialized members of gx_state
Start/Stop Audio Dump During Emulation
Flipped Wave File Channels

This change was done because with the previous method of dumping audio, the mixer would handle switching the RL being emitted by the DSP to LR, and thus would provide the proper channel orientation. Because we're now dumping directly from PushSamples() and PushStreamingSamples(), it was writing the right channel to the left channel of the wave file and vice versa.
If the stack overflow trap region has already been tripped, don't continue to ignore faults there.

In the unlikely case that it tripped and then, due to a bug, some other
fault occurred (e.g. stack misalignment), Dolphin would go into an
infinite loop rather than crashing.
D3D: State cache now reduces number of blend state permutations by collapsing some states that have blending disabled
Get rid of netpad and just send the GCPadStatus in netplay.
Minor spelling fix
Specified where GC Bios files go
D3D: Removed SetBlendOp, SetSrcBlend and SetDestBlend as they are now trivial
Fixed minor typo
Merge pull request #1313 from Stevoisiak/patch-3

Fixed minor typo
Hash: unroll CRC loop, since CRC32 typically has nontrivial latency

Seems to be about 20-30% faster texture cache hashing on my machine.
Merge pull request #1304 from FioraAeterna/fasterhash

Hash: unroll CRC loop, since CRC32 typically has nontrivial latency
Merge pull request #475 from kayru/d3d_state_cache

D3D: Implemented cache for dynamic render states
Merge pull request #1276 from RisingFog/flipped-audio-dump

Flipped Wave File Channels for Audio Dumping
Merge pull request #1297 from RisingFog/audio-dump-during-emulation

Start/Stop Audio Dump During Emulation