framework/glsl_parser_test.py: PEP8 style guidelines conformance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
framework/glsl_parser_test.py: Remove spurious import

glsl_parser_test contains an import 'from ConfigParser import
SafeConfigParser' which it doesn't use

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
framework/threadpool.py: replaces SVN garbage with license header

This file currently contains license and author information via SVN
style garbage in the code. This patch replaces that with a proper
license header, using the name and date from the SVN data.

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
framework/threadpool.py: PEP8 style compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
framework/threadpool.py: Drop usused code

Threadpools was brought in from another project, and it shows. There is
usage code for executing threadpool.py as a standalone application, but
Piglit only uses threadpool.py as a library, so we don't need that code.

This drops all the code south of the 'USAGE' heading

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
framework/core.py: Conform to PEP8 style guidelines

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>