fbo-clear-formats: Return texture name as uint.

This fixes the GL errors with the stencil clear test.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
max-samplers: use the maximum number of textures in all shader stages

Reviewed-by: Brian Paul <brianp@vmware.com>

v2: added changes from Brian (only require GL 2.0, print the limits)
python: Convert tabs to spaces

PEP 8 specifies that all indents should be either 4 spaces or an
equivalent tab indent, but without mixing tabs and spaces, with a
preference for spaces over tabs because they are absolute. Tabs and
spaces should not be mixed because they lead to expected indent level
errors.

Currently piglit uses a mixture of spaces and tabs, this patch uses the
python tools reindent.py to convert the tabs to spaces.

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
v2: Rebase against master, fix apparent unintentional unindentation of
    help text in piglit-summary.py (changes by anholt)
Reviewed-by: Eric Anholt <eric@anholt.net>