* java/lang/natString.cc (rehash): Don't bother with memset;
	_Jv_AllocBytes returns zero'd memory.  Use _Jv_AllocBytesChecked.
	Use UNMASK_PTR.
	(UNMASK_PTR): New macro.
	(intern): Unmask pointer before returning it.  Register finalizer
	for the string.
	(unintern): Handle case where
	(MASK_PTR): New macro.
	(PTR_MAKSED): Likewise.
	(_Jv_NewStringUtf8Const): Use UNMASK_PTR.

From-SVN: r40593