Summary: port http://phabricator.alibaba.net/D2815 to Dragonwell8

Test Plan: test/tools/pack200/

Reviewers: 麦庶, 三红

Reviewed By: 麦庶, 三红

Differential Revision: https://aone.alibaba-inc.com/code/D856287

Summary:
port jwarmup to dragonwell 8u
ref T19299187

Test Plan: see hotspot part

Reviewers: 三红, yumin.qi

Reviewed By: 三红, yumin.qi

Subscribers: 麦庶

Differential Revision: https://aone.alibaba-inc.com/code/D852150

Summary:
- Port D336186 to Dragonwell
- Added 'mini' option to 'dump' sub-command  of 'jmap' tool

Test Plan: jdk/test/ras

Reviewers: 井桐

Reviewed By: 井桐

Differential Revision: https://aone.alibaba-inc.com/code/D849318

Summary:
- Port fix https://aone.alibaba-inc.com/project/355606/issue/8443788 to dragonwell
- Switch implementation of java/net/Inet4AddressImpl.lookupAllHostAddr based on Linux glibc versions.

Test Plan: jdk/test/net/

Reviewers: 井桐

Reviewed By: 井桐

Differential Revision: https://aone.alibaba-inc.com/code/D849274

Summary:
Backport of JFR(jdk part) to dragonwell based on JFR preview version(JDK11).
Link:
http://cr.openjdk.java.net/~mgronlun/JEP328_FlightRecorder/Preview/webrev/index.html

Test Plan: test/jdk/jfr/

Reviewers: 卓昂, 传胜, 麦庶, yumin.qi, 三红, 芳玺

Reviewed By: 三红, 芳玺, 卓昂, yumin.qi

Differential Revision: https://aone.alibaba-inc.com/code/D818249

Summary: add distro name and version in java version string

Reviewers: 传胜

Subscribers: 麦庶

Differential Revision: https://aone.alibaba-inc.com/code/D796935

Reviewed-by: sspitsyn, amenkov, gadams, jcbeyler

Reviewed-by: alanb, mchung

8210695: Create test to cover JDK-8205330 InitialDirContext ctor sometimes throws NPE if the server has sent a disconnection
Reviewed-by: vtewari, dfuchs, chegar, coffeys

Reviewed-by: chegar, dfuchs

Reviewed-by: coffeys

Reviewed-by: chegar, coffeys, vtewari

Reviewed-by: pkoppula, coffeys

Reviewed-by: jeff, prr

Reviewed-by: mullan, jnimeh, coffeys