mruby/mruby — pull request #1691 by miura1729 (2014-02-09 09:04:04+00:00)
Title: Store raw stack address in callinfo instead of offset from stbas

Currentry, RIRE VM saves stack pointer as offset from stbase(bottom of stack) at method invocation. I modify to save stack pointer as raw address of stack. As a result of this change, I except getting better efficiency method call.