ARB_fp: invert expected result for duplicate precision hint tests

The ARB_fragment_program spec, 3.11.4.5.2 says:

    "Only one precision control option may be specified by any given
    fragment program.  A fragment program that specifies both the
    "ARB_precision_hint_fastest" and "ARB_precision_hint_nicest"
    program options will fail to load.

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
piglit-run.py: Comply with pep8

According the python pep8 tool piglit-run now complies with the pep8
style guidelines

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
piglit-merge-results.py: PEP8 compliance

Brings piglit-merge-result.py into PEP8 compliance.

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
piglit-print-commands.py: PEP8 compliance

Brings this file into PEP8 compliance.

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
piglit-summary-junit.py: Remove vim modeseting

There is not reason for piglit to contain modesetting lines, especially
when the incorrectly set the mode, as this one did. Drop it to prevent
future headaches

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
piglit-summary-junit.py: PEP8 compliance

make piglit-summary-junit.py PEP8 compliant.

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
piglit-summary.py: PEP8 compliance

Brings piglit-summary.py into PEP8 compliance.

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
generate-glean-tests.py: PEP8 compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
core.py: PEP8 compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
exectest.py: PEP 8 compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
gleantest.py: PEP8 Compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
glsl_parser_test.py: Remove vim modesetting line

Another incorrect vim modesetting line is present in this file. This
patch removes it to prevent future pain.

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
glsl_parser_test.py: PEP8 Compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
log.py: PEP8 Compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
patterns.py: PEP8 compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
threads.py: PEP8 compliance

Signed-off-by: Dylan Baker <baker.dylan.c@gmail.com>
shader_test.py: PEP8 compliance

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