Do not define printnum_long_int on systems with constant current_wordsize

Do not define printnum_long_int on systems with constant current_wordsize

* defs.h: Check [!current_wordsize] instead
of [SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4] to select
definitions of printnum_slong, printnum_ulong, and printnum_ptr.
* util.c: Check [!current_wordsize] instead
of [SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4] to decide
whether to compile printnum_long_int.