[optimizing] Do not inline intrinsics

The intrinsics generally have specialized code and the code for them
may be faster than what can be achieved with inlining. Thus inliner
should skip intrinsics.

At the same time, easy methods are not worth intrinsifying: ie String
length and isEmpty. Those can be handled by inliner with no problem
and can actually lead to better code since call is not kept around
through all of the optimizations.

Change-Id: Iab38e6c33f79efa54d845d4871cf26fa9b235ab0
Signed-off-by: Razvan A Lupusoru <razvan.a.lupusoru@intel.com>