we do on purpose.

Also moved printing of the remainder of the message to INFO level logging, which
might be a bad idea.
But nvcc spews things that are not errors to stderr which are not easy to filter
out.  I'm thinking of the warnings that _POSIX_SOURCE is redefined, followed by
a multiline header traceback.
We do not want to print that to stderr by default every time someone compiles
anything with nvcc.

If compilation fails, then the whole nvcc stderr goes to our stderr anyway.

try and draw 6 samples per thread instead of one.

help it go faster though.

It was putting into the same profile the time taked inside the scan op to the sacn op AND into the individual op.

Now make multiple profiler instance to split them.

make shared constructor for scalar respect floatX and make test that tensor shared constructor respects it.

This is done to don't insert Rerebroadcast op that do nothing after those optimization are applied. This happen with GpuJoin.

make the api of the cuda shared variable constructor similar to the tensor shared variable constructor.