RFR: 8264983: Add gtest for JDK-8264008 [v2]

[Jie Fu]

> Hi all,
> 
> Here is the gtest for JDK-8264008 as discussed here: https://github.com/openjdk/jdk/pull/3142#pullrequestreview-618244082 .
> Any comments?
> 
> Testing: 
>  - test/hotspot/jtreg/gtest/MetaspaceUtilsGtests.java on Linux/{x64,x86_32} and macOSX
> 
> Thanks.
> Best regards,
> Jie

Jie Fu has updated the pull request incrementally with one additional commit since the last revision:

  none_compressed_class_pointers -> non_compressed_class_pointers

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3414/files
  - new: https://git.openjdk.java.net/jdk/pull/3414/files/314664a7..9c5f0e9b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3414&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3414&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3414.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3414/head:pull/3414

PR: https://git.openjdk.java.net/jdk/pull/3414