Add 'PYLIB' and 'PY3LIB' with '-L' in configure.
Revert python 3 probing in configure.ac
Add ruby with MingW64 instead.
Signed-off-by: Erez Geva <ErezGeva2@gmail.com>
- some of the %.clean rules in the test-suite Makefiles were using a single tab
as an empty rule, dangerous! I've replaced these with the safer '@exit 0'.