RFR (XS): 8209996: [PPC64] Fix JFR profiling

[Haug, Gunter]

Hi all,

There are two bugs in PPC64 platform code preventing a jtreg test (TestFullStackTrace.java) to complete successfully. Can I please have a review and a sponsor for the following change which fixes the issue:

https://bugs.openjdk.java.net/browse/JDK-8209996
http://cr.openjdk.java.net/~ghaug/webrevs/8209996/

frame::safe_for_sender made two assertions which are two strict. First, unextended_sp may well be greater than sp due to frame resizing (compacting) for interpreter fames. Second, top_ijava_frame_abi is only included in the top frame, obviously.

Thanks,
Gunter