[patch] use python-config if available

Matthias Klose
2012-12-20T15:41:37Z

This patch does use the python-config, which comes shipped with the python
interpreter, and falls back to the internal copy of python-config.py.
AC_CHECK_TOOL is used to find a possible python-config for the host.

Tested with 7.5 with a native and a cross build.

Matthias