Gh1461

This is needed to make the new GpuImages2Neibs ignore_border mode pass.

Also make sure the input is on the CPU, so a transfer is added when needed.

Tests

Fix a test error related type typenum of ulonglong and uint64 being different even if they are equivalent.

Minor fixes

Fix a crash on Mac OS when sys.prefix is different from its realpath

The problem was that new_path was actually in the environment variable,
but when realpath(v) was called, it became a different string (starting
with a single backslash instead of two).

Backport new exception to python 2.4

We use the e.args field elsewhere and it is set only if we call Exception.__init__ in python 2.4

Gpu min max, more pattern implemented

Presentation