* bignum.c (rb_absint_numwords): Return (size_t)-1 when overflow.
  Refine variable names.
  (rb_absint_size): Refine variable names.

* internal.h (rb_absint_size): Refine an argument name.
  (rb_absint_numwords): Ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41197 b2dd03c8-39d4-4d8f-98ff-823fe69b080e