Python update 1

Multiple fixes; seems Python is not that cross-compiler-friendly after all, but it is better than Python 2.7.3.
This merge includes:
- reduce bloat for `python-full`; also reduces bloat when installing packages which are folders; maybe start a discussion to remove current `python-full` package
- fixed Python C extensions; seems they were not being built after the ugprade, but the build was not failing; enforced filespecs to fail if file-to-be-added not present
- patch to disable Python tests during build
- _md5 and _sha libs are now grouped under _hashblibs in more recent Python versions
- added  `ac_cv_buggy_getaddrinfo=no`  this was present in 2.7.3; seems to help

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>