declarations to the beginning of a scope.

While cleaning up Bill's C style, I may have cleaned up some code
he didn't touch as well (in _ssl.c).

Revert misguided attempt at fixing incompatibility between -m and -i switches (better fix coming soon)

Second half of #1752175: #ifdef out references to PyImport_DynLoadFiletab if HAVE_DYNAMIC_LOADING is not defined.