Update MSVC CFlags to be more consistent with other compilers. Also disables RTTI in a simliar manner to GCC/Clang for the JVM.
------------- Commit messages: - Update MSVC CFlags Changes: https://git.openjdk.org/jdk/pull/12073/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12073&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8300531 Stats: 13 lines in 1 file changed: 6 ins; 0 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/12073.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12073/head:pull/12073 PR: https://git.openjdk.org/jdk/pull/12073
