[jdk11u-dev] RFR: JDK-8286630: [11] avoid -std=c++11 CXX harfbuzz buildflag on Windows

[Matthias Baesken]

The Visual Studio compilers (checked VS2013 and VS2017) do not know this flag, output is
cl : Command line warning D9002 : ignoring unknown option '-std=c+11'

So the flag should be avoided on Windows.

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Commit messages:
 - JDK-8286630

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/1081/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=1081&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8286630
  Stats: 4 lines in 1 file changed: 1 ins; 2 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/1081.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/1081/head:pull/1081

PR: https://git.openjdk.java.net/jdk11u-dev/pull/1081