egltrace: Add GL_EXT_texture_storage entrypoints
egltrace: Add GL_EXT_texture_storage entrypoints

Prototypes obtained through:

  specs/scripts/gltxt.py http://www.khronos.org/registry/gles/extensions/EXT/EXT_texture_storage.txt

Issue #184.

schulmar/apitrace,apitrace/apitrace,schulmar/apitrace,EoD/apitrace,surround-io/apitrace,swq0553/apitrace,tuanthng/apitrace,tuanthng/apitrace,surround-io/apitrace,surround-io/apitrace,swq0553/apitrace,apitrace/apitrace,apitrace/apitrace,joshua5201/apitrace,trtt/apitrace,trtt/apitrace,trtt/apitrace,trtt/apitrace,joshua5201/apitrace,schulmar/apitrace,apitrace/apitrace,tuanthng/apitrace,joshua5201/apitrace,tuanthng/apitrace,surround-io/apitrace,EoD/apitrace,swq0553/apitrace,EoD/apitrace,swq0553/apitrace,schulmar/apitrace,joshua5201/apitrace,tuanthng/apitrace,schulmar/apitrace,joshua5201/apitrace,trtt/apitrace,swq0553/apitrace,surround-io/apitrace,EoD/apitrace,EoD/apitrace