* vm.c, insns.def, eval.c, vm_insnhelper.c: fix CREF handling.

VM value stack frame of block contains cref information.
  (dfp[-1] points CREF)
* compile.c, eval_intern.h, eval_method.c, load.c, proc.c,
  vm_dump.h, vm_core.h: ditto.
* include/ruby/ruby.h, gc.c: remove T_VALUES because of above
  changes.
* bootstraptest/test_eval.rb, test_knownbug.rb: move solved test.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16468 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

benchmark/bmx_temp.rb

@@ -0,0 +1,9 @@
+def m
+  nil
+end
+
+i=0
+while i<800000 # benchmark loop 2
+  i+=1
+  m; m; m; m; m; m; m; m;
+end