driver: sync RA after texture cache flush
driver: trivial command stream optimizations

Submit shader code, uniforms in one go.
Only mark TS state dirty if clear color changed.
Show result of last command batch. Cosmetic change.
Copy cube_etna.c to cube_etna_gc2000.c
state_3d.xml:
Add unknown bit in PE depth config used by cube example.
VS_RANGE_LOW is index of first vs instruction.
First instruction address = 0x0C000 + VS_RANGE_LOW*16.
VS_RANGE_HIGH is index of last instruction.
PS_RANGE_* works same way.
Generate headers to include new state_3d.xml
Update .gitignore
cube_etna replay on GC880
cube_etna2_gc2000.c that works on GC880.