(Test will pass once the VM modes are committed.)

Doc that it will get fixed with GpuNdArray.

Fixed situation where compile lock would not be released after failing to create a temporary work dir

'Added more test for cuda_ndarray.zeros() and make it raise an appropriate error when it receive no input.'

We may change that in the future.

Fixed test-suite error caused by nosetests trying to run a method that was not intended to be a test by itself