D3D: Fixed D3D validation error during EFB to texture copy

Texture was being bound as a render target while still being set as a shader resource.
D3D automatically unbinds the SRV in this case and generates a validation error.
The fix is to manually unbind SRV, render into it and then re-bind to old slots.
windows: use qt 5.4.0
OGL: Attempt a larger buffer to workaround 7946.
Merge pull request #1702 from CarlKenner/DebugSymbols

Fix many bugs with the Symbols menu (when run with -d argument).
Merge pull request #1709 from unknownbrackets/attributeless-fix

OGL: Attempt a larger buffer to workaround 7946
Merge pull request #1698 from shuffle2/win-qt-5.4.0

windows: use qt 5.4.0
D3D: Moved setting texture by slot mask into StateManager
Jit: move constants out of class

This fixes a linking issues on debug builds.
Merge pull request #1710 from degasus/jit-linking-fix

Jit: move constants out of class
Merge pull request #1689 from kayru/d3d_efb_copy_fix

D3D: Fixed D3D validation error during EFB to texture copy
Fix debug prints so they don't slow down Release mode.
And fix a couple of comments.
Merge branch 'master' of https://github.com/dolphin-emu/dolphin into S3D