8132919: Put compiler tests in packages
Reviewed-by: vlivanov, dpochepk
Contributed-by: igor.ignatyev@oracle.com

8138689: use package for /compiler/whitebox common classes
Summary: Moved CompilerWhiteBoxTest to package, updating tests accordingly
Reviewed-by: iignatyev

8130832: Extend the WhiteBox API to provide information about the availability of compiler intrinsics
Summary: Add a new method, sun.hotspot.WhiteBox.isIntrinsicAvailable, that can be used to determine if an intrinsic is available.
Reviewed-by: kvn, jrose

8028587: New tests development for intrisics for basic operators - add, neg, inc, dec, sub, mul
Reviewed-by: twisti
Contributed-by: anton.ivanov@oracle.com