Move #ifdef SWIGPYTHON outside of %define

There's apparently a time-of-evaluation issue here.
The docs say they reevaluate the contents of %define at expansion
time. Apparently SWIGPYTHON et al. aren't defined in whatever scope
that may be.

Move TOP_SWIG_IFILES outside of if PYTHON

correct typo in script name

move new suffix rules to common Makefile so everything can use them.

regenerated