* Initial transform feedback support
* Some nits and fixes
* Update ReportCounterType and Write method
* Can't change shader or TFB bindings while TFB is active
* Fix geometry shader input names with new naming
* Use correct shader local size instead of a hardcoded size
* Remove unused uniform block
* Update XML doc
* Local memory size has 23 bits on maxwell
* Generate compute QMD struct from nv open doc header
* Remove dummy arrays when shared or local memory is not used, other improvements
Support shared color masks (used by Nouveau and maybe the NVIDIA
driver).
Support draw buffers (also required by OpenGL).
Support viewport transform disable (disabled for now as it breaks some
games).
Fix instanced rendering draw being ignored for multi draw.
Fix IADD and IADD3 immediate shader encodings, that was not matching
some ops.
Implement FFMA32I shader instruction.
Implement IMAD shader instruction.