Bug fix in test_pool.py. Theano no longer checks if values are infinite.
The check for infinite values is now disabled inside the function "test_pool" instead of being disabled for the entire file
Put 'test_pool' function in a try/finally statement
Added new line to the end of the file.
Merge pull request #1000 from AlassaneNdiaye/fix_test_pool

Bug fix in pylearn2/sandbox/cuda_convnet/tests/test_pool.py. Theano no longer checks if values are infinite in the test test_pool.test_pool