* EGLImageTargetRenderbufferStorageOES was incorrectly accepting
TEXTURE_EXTERNAL_OES as a target. Revert that; the host GL will
correctly reject it with INVALID_ENUM.
* Handle the REQUIRED_TEXTURE_IMAGE_UNITS_OES texparameter query.
* Validate texture parameters set on TEXTURE_EXTERNAL textures;
otherwise invalid parameters would work on the emulator but not on a
real device.
Change-Id: I49a088608d58a9822f33e5916bd354eee3709127
00e61338b8