8006799: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() (jdk part of 6896617) Summary: Move hot loop in ISO_8859_1$Encode.encodeArrayLoop() into separate method encodeISOArray() to be replaced by JVM JIT compiler with optimized intrinsic code. Reviewed-by: alanb, sherman

8006123: Support @Contended Annotation - JEP 142 (jdk part) Summary: jdk changes for 8003895. Reviewed-by: darcy, jrose, coleenp, dholmes, kvn Contributed-by: Aleksey Shipilev <aleksey.shipilev@oracle.com>