RFR: 8265105: gc/arguments/TestSelectDefaultGC.java fails when compiler1 is disabled

[SUN Guoyun]

On MIPS64 platform has not impliment C1,only has C2.
 so when tiered compilation is off, it is unnecessary to set client emulation mode flags.
 perhaps this bug be included by https://bugs.openjdk.java.net/browse/JDK-8251462

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Commit messages:
 - 8265105: gc/arguments/TestSelectDefaultGC.java fails when compiler1 is disabled

Changes: https://git.openjdk.java.net/jdk/pull/3449/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3449&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8265105
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3449.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3449/head:pull/3449

PR: https://git.openjdk.java.net/jdk/pull/3449