* iseq.c, internal.h: change to public (but internal) functions
* VALUE rb_iseq_path(VALUE iseqval);
* VALUE rb_iseq_absolute_path(VALUE iseqval);
* VALUE rb_iseq_label(VALUE iseqval);
* VALUE rb_iseq_base_label(VALUE iseqval);
* VALUE rb_iseq_first_lineno(VALUE iseqval);
  And new (temporary) function:
* VALUE rb_iseq_klass(VALUE iseqval);
* iseq.c. vm_core.h (int rb_iseq_first_lineno): remove
  function `int rb_iseq_first_lineno(const rb_iseq_t *iseq)'.
  Use `VALUE rb_iseq_first_lineno(VALUE iseqval)' instead.
* proc.c. vm_insnhelper.c, vm_method.c: catch up this change.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43162 b2dd03c8-39d4-4d8f-98ff-823fe69b080e