moving definitions place, add/remove prototypes, deleting
unused variables and removing yarv.h.
This commit doesn't change any behavior of ruby/vm.
* yarv.h, common.mk: remove yarv.h (contents are moved to yarvcore.h).
* error.c, eval_intern.h: include yarvcore.h instead yarv.h
* rename some functions:
* debug.[ch]: debug_*() -> ruby_debug_*()
* iseq.c: iseq_*() -> rb_iseq_*(), ruby_iseq_disasm()
* iseq.c: node_name() -> ruby_node_name()
* vm.c: yarv_check_redefinition_opt_method() ->
rb_vm_check_redefinition_opt_method()
* some refactoring with checking -Wall.
* array.c: remove rb_ary_ptr() (unused) and remove unused
local variables.
* object.c: add a prototype of rb_mod_module_exec().
* eval_intern.h (ruby_cref): set it inline.
* eval_load.c (rb_load), yarvcore.c: yarv_load() -> rb_load_internal().
* parse.y: add a prototype of rb_parse_in_eval() (in eval.c).
* process.c: add a prototype of rb_thread_stop_timer_thread() (in thread.c).
* thread.c: remove raw_gets() function (unused) and fix some format
mismatch (format mismatchs have remained yet. this is todo).
* thread.c (rb_thread_wait_fd_rw): fix typo on label name.
* thread_pthread.ci: comment out codes with USE_THREAD_CACHE.
* vm.c (rb_svar, rb_backref_get, rb_backref_get,
rb_lastline_get, rb_lastline_set) : moved from yarvcore.c.
* vm.c (yarv_init_redefined_flag): add a prototype and rename
yarv_opt_method_table to vm_opt_method_table.
* vm.c (rb_thread_eval): moved from yarvcore.c.
* yarvcore.c: remove unused global variables and fix to use nsdr().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11652 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
