Dispatch GLESv2 entry functions to avoid resolving to the same symbol.

Bug 18752589

Change-Id: I39ddf9a6146c174e4af3cc620f812b0f284877c2
Reviewed-on: https://swiftshader-review.googlesource.com/2981
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>
5 files changed