This is needed as we changed the signature of some function and thus we should force the recompilation of all gpu op.

It seam more logical to associate it with the compiler then the Type. This also make cuda_ndarray.cu compiled with it.

make {nvcc,gcc}_module_compile_str a class with another function compile_args that get added in the keys.

Fixed circular import issue

Sorry, I should have tested more thoroughly this stuff with GPU before
pushing it :/

Fix tolerance in Usmm test.

Added missing import

Fix when forcing cuda to be disabled

Fixes for Python 2.4

The GpuOp class must be available even when Cuda is disabled (e.g. by
forcing cuda_available = False). Otherwise some tests fail.

This commit moves the definition of GpuOp directly into cuda/__init__.py
so that it works.

Minor fixes

Update NEWS.txt

Make blas functions work with all stride patterns

Fix dtype in sparse test.

Mixed changes

Test nvidia driver

This allow to make sure the test for the driver was executed.

raise an exception if the test fail. This is because some nvidia driver version don't correctly handle our reduction code.