RFR: JDK-8276046: codestrings.validate_vm gtest fails on ppc64, s390 [v2]

[Thomas Stuefe]

> Trivial patch to switch off the associated gtest on these platforms. PPC64 and s390 compilers don't use code strings.

Thomas Stuefe has updated the pull request incrementally with one additional commit since the last revision:

  request aleksey

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6133/files
  - new: https://git.openjdk.java.net/jdk/pull/6133/files/0f3e2cf3..f651b6ae

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6133&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6133&range=00-01

  Stats: 10 lines in 1 file changed: 5 ins; 5 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6133.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6133/head:pull/6133

PR: https://git.openjdk.java.net/jdk/pull/6133