Reviewed-by: kvn

Reviewed-by: erikj

8062957: Heap is not shrunk when deallocating under memory pressure
Summary: Added explicit -XX:-ExplicitGCInvokesConcurrent to invocations
Reviewed-by: brutisso, tschatzl

Summary: Update the URL for HotSpot bug reports.
Reviewed-by: dcubed, rdurbin

Summary: fixed order of DeoptReason values declaration so now it matches the order used in jdk9 and the names order in Deoptimization::_trap_reason_name.
Reviewed-by: kvn

Reviewed-by: mgerdin, coleenp, bdelsart

Summary: Back-out 8052081 changes made in lcm.cpp.
Reviewed-by: iveresov, roland