[Piglit] Piglit build broken

[Brian Paul]

Dylan, I think you may have forgot to commit a new file or something:

Traceback (most recent call last):
   File "/home/brianp/pig/generated_tests/gen_texture_lod_tests.py", 
line 178, in <module>
     main()
   File "/home/brianp/pig/generated_tests/gen_texture_lod_tests.py", 
line 160, in main
     gen_frag_lod_test(params, name)
   File "/home/brianp/pig/generated_tests/gen_texture_lod_tests.py", 
line 84, in gen_frag_lod_test
     with open(filename, 'w+') as f:
IOError: [Errno 2] No such file or directory: 
'spec/ARB_shader_texture_lod/compiler/tex_lod-01.frag'

-Brian