RFR (XS): 8146850, 8149850: Remove TraceHandleAllocation rather than converting to UL

[Gerard Ziemski]

hi all,

Please review this XS fix, which:

- removes TraceJNIHandleAllocation (JDK-8146850)
- removes another 2 related flags, i.e. HandleAllocationLimit and TotalHandleAllocationLimit (JDK-8149850), for which I have filed compatibility request, and won’t push the fix is approved

bug 1 link at https://bugs.openjdk.java.net/browse/JDK-8146850
bug 2 link at https://bugs.openjdk.java.net/browse/JDK-8149850
open webrev at http://cr.openjdk.java.net/~gziemski/8146850_rev0

compatibility request  approved for JDK-8146850, pending for JDK-8149850, passes JPRT hotspot and RBT hotspot_all


cheers