Detect unused inputs to theano.function

Profiling

Format fixes to keep sphinx happy

Add a mechanism to either raise an error (default), display a warning,
or do nothing when unused inputs are passed.

Fix path in buildbot file.

Raise an Exception for duplicate inputs in pfunc

Better nosetest script

We used to re-use numpy.test mechanism, but it was not really suited to
Theano. Now we use a subclass of NumPy's one, with code copied and
adapted from NumPy.

The --batch option makes it easier to call run_tests_in_batch

and an option to disable it.

Fixed a test on 32-bit platforms

Also uses less memory for everyone.

added new buildbot file for python 2.4