Add query tests for ES31 states.

* Queries and pretty-printing for GLES31 core states.
* Move sample_mask_value from integer.* to indexed.*.
* Add image state reset.
* Move tcu::Array to a separate file

Bug: 18925583
Change-Id: Icce01201ca3c2c7daeb2daeb0fed04d373a15eb6
40 files changed