Summary:
- From http://hg.openjdk.java.net/mlvm/mlvm/hotspot/file/4cd7d914b0e3/coro-simple.patch.
- Resolve trivial conflicts in: systemDictionary.hpp, thread.cpp, debug.hpp.
- Add an option "EnableCoroutine".

Test Plan: run jtreg tests

Reviewed-by: yuleil, shiyuexw, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/113

This reverts commit 5382b8e0.

Summary: ported HotSpot interfaces to Dragonwell8 to support MultiTenant framework

Test Plan: jdk/test/multi-tenant

Reviewed-by: yuleil, sanhong

Issue: https://github.com/alibaba/dragonwell8/issues/84

Reviewers: 效山, 芳玺, 传胜, 三红, yumin.qi

Reviewed By: 三红, 芳玺, 效山, 卓仁

Differential Revision: https://aone.alibaba-inc.com/code/D815657

8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

Summary: Change copyright date from 2017 to 2018.
Reviewed-by: andrew

Summary: Add tag bit to all JNI weak handles
Reviewed-by: kbarrett, coleenp, tschatzl

Reviewed-by: stuefe, tschatzl

Reviewed-by: dholmes, kevinw

Reviewed-by: stuefe, stefank

Reviewed-by: mschoene, coleenp, rhalade, acorn, gtriantafill
Contributed-by: rachel.protacio@oracle.com

Summary: Add support for VM_Version::L1_data_cache_line_size().
Reviewed-by: dsimms, kvn, dholmes

Summary: Add support for VM_Version::L1_data_cache_line_size().
Reviewed-by: dsimms, kvn, dholmes

Summary: Add os::vsnprintf and os::snprintf.
Reviewed-by: kbarrett, lfoltan, stuefe, mlarsson

Summary: Arguments coming from native should be converted to 0=false, 1-255=true
Reviewed-by: coleenp

Summary: Arguments coming from native should be converted to 0=false, 1-255=true
Reviewed-by: coleenp

Reviewed-by: coleenp, roland

Summary: Check for a valid itable index instead of checking if the holder is an interface
Reviewed-by: dsimms, dholmes

Reviewed-by: mgerdin, coleenp, bdelsart

Summary: Allow G1 to decommit memory of arbitrary regions within the heap and their associated auxiliary data structures card table, BOT, hot card cache, and mark bitmaps.
Reviewed-by: mgerdin, brutisso, jwilhelm

Summary: Wrapped memory with standard bounds checking "GuardedMemory".
Reviewed-by: zgu, fparain, dcubed

Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

Reviewed-by: sjohanss, jmasa

8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti

Summary: Increase the previous limit from 4k to 64k, added "-XX:MaxJNILocalCapacity=<capacity>" flag
Reviewed-by: hseigel, fparain

Reviewed-by: coleenp, roland

Reviewed-by: mgerdin, coleenp

Summary: Now using NewRatio to size initial NewSize if not specified on commandline.
Reviewed-by: jmasa, jwilhelm

Summary: Moved test code inside INCLUDE_ALL_GCS
Reviewed-by: stefank, ehelin

Reviewed-by: mgerdin, brutisso, tschatzl

Summary: Made the flags Min- and MaxHeapFreeRatio manageable, and implemented support for these flags in ParallelGC.
Reviewed-by: sla, mgerdin, brutisso

Summary: Change the code cache remembered sets data structure from a GrowableArray to a chunked list of nmethods. This makes the data structure more amenable to parallelization, and decreases freeing time.
Reviewed-by: mgerdin, brutisso

Summary: added JNI exception pending check in several files under src/share/vm/prims directory
Reviewed-by: coleenp, minqi

Reviewed-by: dholmes, kvn, stefank, twisti

Reviewed-by: dholmes, acorn, kamg

Reviewed-by: phh

8029727: On OS X dtrace probes Call<type>MethodA/Call<type>MethodV are not fired.
8029728: On OS X dtrace probes SetStaticBooleanField are not fired
Reviewed-by: kamg, dsamersoff

Summary: Windows need an exception wrapper around getPsrInfo_stub() call in order to properly handle SEGV for YMM registers test.
Reviewed-by: iveresov, iignatyev

Reviewed-by: coleenp, jmasa

Summary: Chunk up the last piece of committed memory in a VSN when getting a new one.
Reviewed-by: stefank, jmasa