Test a geometry shader that does an item-by-item copy of gl_ClipDistance.

This is similar to the existing test "clip-distance-bulk-copy", except
that it copies the elements of gl_ClipDistance one at a time instead
of as a bulk assignment.

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Test that a layered fbo can have attachments with different layer counts.
Revert "framework: Add support for a test timeout"

This reverts commit ab2eb660925e3680e868c5f469a4ef32e6dd9a59.

Conflicts:
	framework/status.py
WIP: loop analysis tests
WIP: test clear color with mismatched layer count
Swappy swap