pwl.c: remove our definition of BUFSIZ, it is required by C89 and later.
pwl.c: remove our definition of BUFSIZ, it is required by C89 and later.

albbas/enchant,albbas/enchant,rrthomas/enchant,AbiWord/enchant,AbiWord/enchant,rrthomas/enchant,AbiWord/enchant,rrthomas/enchant,albbas/enchant,AbiWord/enchant,rrthomas/enchant,albbas/enchant