Summary: ported MultiTenant framework to Dragonwell8

Test Plan: jdk/test/multi-tenant

Reviewed-by: yuleil, sanhong

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

Summary: G1ElasticHeap to support heap shrink/expansion in runtime

Test Plan:
test/elastic-heap/

Reviewers:
luchsh, sanhong

Issue:
https://github.com/alibaba/dragonwell8/issues/46

CR:
https://github.com/alibaba/dragonwell8_jdk/pull/1

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

Reviewed-by: martin, naoto

Reviewed-by: shade

Reviewed-by: bpb, lancea

--HG--
extra : rebase_source : a2e4cca7d24f1ee9f803b76f36785d5bdef2d760

8215982: (tz) Upgrade time-zone data to tzdata2018i
8225580: tzdata2018i integration causes test failures on jdk-13
Reviewed-by: andrew, naoto

8215982: (tz) Upgrade time-zone data to tzdata2018i
8225580: tzdata2018i integration causes test failures on jdk-13
Reviewed-by: andrew, naoto

Reviewed-by: rriggs, naoto

Reviewed-by: naoto

Reviewed-by: naoto

Reviewed-by: naoto
Contributed-by: nishit.jain@oracle.com

Reviewed-by: naoto, rriggs, tbell, phh
Contributed-by: nishit.jain@oracle.com

Summary: Also brings in some cleanups from JDK-8048123
Reviewed-by: rriggs, chegar, phh, clanger, aph

Reviewed-by: rriggs, chegar

8207152: Placeholder for Japanese new era should be two characters
8211398: Square character support for the Japanese new era
8180469: Wrong short form text for supplemental Japanese era
8206120: Add test cases for lenient Japanese era parsing
8218915: Change isJavaIdentifierStart and isJavaIdentifierPart to handle new code points
8217710: Add 5 currency code points to Java SE 8uX
Reviewed-by: coffeys, naoto
Contributed-by: deepak.kejriwal@oracle.com

Reviewed-by: martin, naoto

Reviewed-by: martin, naoto

Reviewed-by: martin, naoto

Reviewed-by: naoto

Reviewed-by: naoto

Reviewed-by: naoto

Reviewed-by: coffeys, naoto

Reviewed-by: coffeys, naoto

8190259: test tck.java.time.zone.TCKZoneRules is broken by tzdata2017c
Reviewed-by: naoto, martin

8190259: test tck.java.time.zone.TCKZoneRules is broken by tzdata2017c
Reviewed-by: naoto, martin

Reviewed-by: martin, naoto

Reviewed-by: martin, naoto

Reviewed-by: martin, naoto

Reviewed-by: naoto

Reviewed-by: naoto

Reviewed-by: naoto

Reviewed-by: martin, okutsu

Reviewed-by: martin, okutsu

Reviewed-by: martin, okutsu

Reviewed-by: martin, okutsu

Reviewed-by: martin, okutsu

Reviewed-by: okutsu

Reviewed-by: okutsu, coffeys

Reviewed-by: martin, okutsu