Fix cycle

Add case where 'axis' is a numpy scalar array

If the 'axis' variable is a numpy scalar array (like numpy.array(1)), these conditional branches will fail as it tries to build a set over the non-iterable array. I've added another branch to handle this case.

Mixed small stuff

If it happen frequently on the same test, we could modify this test to be more verbose or faster.

modify do_nightly_build_send to allow to specify where to get the files ...

Update check for non-available gradient.

At least, it was an error in Join at run time.

Better error message when missing memory on the GPU.

Don't sum scan profile in the sum of printed profiles.

This duplicate the info as the outer func is already in the summed profile.

fix pickle cache leak

make apt-get more verbose to try to remove the 10 minutes without output...