* internal.h (struct RBignum): Use size_t for len.

* include/ruby/intern.h (rb_big_new): Use size_t instead of long to
  specify the size of bignum.
  (rb_big_resize): Ditto.

* bignum.c: Follow above changes.

* rational.c: Follow above changes.

* marshal.c: Follow above changes.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45636 b2dd03c8-39d4-4d8f-98ff-823fe69b080e