RFR: 8257885: [TESTBUG] java/foreign/TestSegments.java fails on x86_32

[Jie Fu]

Hi all,

java/foreign/TestSegments.java fails on x86_32 due to '-Xmx4G'.
The reason is that -Xmx4G is invalid maximum heap size for 32-bit platforms.
The current implimentation only supports maximum 3800M on 32-bit systems [1].

The fix just change '-Xmx4G' to '-Xmx3500M'.

Testing:
  - java/foreign/TestSegments.java on Linux/x86_{32,64}  

Thanks.
Best regards,
Jie

[1] https://github.com/openjdk/jdk/blob/master/src/hotspot/os/posix/os_posix.cpp#L567

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Commit messages:
 - 8257885: [TESTBUG] java/foreign/TestSegments.java fails on x86_32

Changes: https://git.openjdk.java.net/jdk/pull/1689/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1689&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257885
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1689.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1689/head:pull/1689

PR: https://git.openjdk.java.net/jdk/pull/1689