Add err

Minor stuff

Also fixed some small typos and replaced a zip by izip.

Also fixed a few more typos in surrounding code.

Also better formatting of this line.

Debugprint id2

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.