VALUE rb_newobj_of(VALUE klass, VALUE flags)
  #define NEWOBJ_OF(obj,type,klass,flags)
  These allow to change a allocation strategy depending on klass
  or flags.

* gc.c: ditto

* array.c: use new C API.
* bignum.c: ditto
* class.c: ditto
* complex.c: ditto
* ext/socket/ancdata.c: ditto
* ext/socket/option.c: ditto
* hash.c: ditto
* io.c: ditto
* marshal.c: ditto
* numeric.c: ditto
* object.c: ditto
* random.c: ditto
* range.c: ditto
* rational.c: ditto
* re.c: ditto
* string.c: ditto
* struct.c: ditto
  [Feature #7177][Feature #7047]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37275 b2dd03c8-39d4-4d8f-98ff-823fe69b080e