This fixes format support tables in formatutils.cpp and formatutilsgl.cpp
to conform to the core and extension GLES specs,
for a large portion of the formats.
ExtsOnly SupportRequirement was enhanced to accept multiple sets of extensions.
Format is supported if all the extensions in one of the sets are available.

Also fixes determining support for extensions based on those formats.

And some fixes to tests which fail due to more strict format support.

Bug: angleproject:2567

Change-Id: I6050fff9c597f658fdcea2477bff59a603cdb7e8
Reviewed-on: https://chromium-review.googlesource.com/1105612Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@google.com>