Python macOS 10.14 to 10.15 API Differences

object.h
Added #def Py_SETREF
Added #def Py_XSETREF
pyconfig.h
Removed #def AC_APPLE_UNIVERSAL_BUILD
Removed #def HAVE_ST_BLOCKS
Added #def HAVE_COMPUTED_GOTOS
Added #def HAVE_CURSES_FILTER
Added #def HAVE_CURSES_HAS_KEY
Added #def HAVE_CURSES_IMMEDOK
Added #def HAVE_CURSES_SYNCOK
Added #def HAVE_CURSES_TYPEAHEAD
Added #def HAVE_CURSES_USE_ENV
Added #def HAVE_CURSES_WCHGAT
Added #def HAVE_SYS_RANDOM_H
Added #def WINDOW_HAS_FLAGS