RFR [jdk11]: 8234525: enable link-time section-gc for linux s390x to remove unused code

[Baesken, Matthias]

Hello , please review  the downport of   "8234525: enable link-time section-gc for linux s390x to remove unused code"   to jdk11 .

My change from jdk/jdk  did not apply directly and I had to adjust it slightly .




Bug  and  jdk/jdk change :

https://bugs.openjdk.java.net/browse/JDK-8234525
https://hg.openjdk.java.net/jdk/jdk/rev/c04fa10636fd


Adjusted change for jdk11u-dev :

http://cr.openjdk.java.net/~mbaesken/webrevs/8234525.0_jdk11/


Original review thread :

https://mail.openjdk.java.net/pipermail/build-dev/2019-November/026326.html


Thanks, Matthias