Search for other ABIFLAGS builds of Python
Starting with Python3, standard Python installs may have additional ABI flags attached to include directories and library names. As of 3.2, the following flags are in the configure file: d -> --with-debug m -> --with-pymalloc u -> --with-wide-unicode Python 3.3 seems to no longer have --with-wide-unicode. Hopefully Python will ensure that the possible flags always show up in a stable order. The 'd' flag is ignored since the debug library is considered separate. There is still the problem where ABI flags cannot be specified in find_package since the letters confuse the version comparator.