RFR: 8280761: UseCompressedOops should be set after limit_heap_by_allocatable_memory [v6]

[KIRIYAMA Takuya]

> I fixed to set UseCompressedOops flag after limit_heap_by_allocatable_memory(). 
> So when ulimit -v is called and -XX:MaxRAM is set, UseCompressedOops does not become false. 
> And all hotspot tier1 test are passed.
> Would you please review this fix?

KIRIYAMA Takuya has updated the pull request incrementally with one additional commit since the last revision:

  8280761 UseCompressedOops should be set after limit_heap_by_allocatable_memory

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7938/files
  - new: https://git.openjdk.java.net/jdk/pull/7938/files/e2fe253f..65223a52

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7938&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7938&range=04-05

  Stats: 4 lines in 1 file changed: 3 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7938.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7938/head:pull/7938

PR: https://git.openjdk.java.net/jdk/pull/7938