RFR: JDK-8300531: MSVC CFlags look suspicious [v3]

[Justin King]

> Update MSVC CFlags to be more consistent with other compilers. Also disables RTTI in a simliar manner to GCC/Clang for the JVM.

Justin King has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains one additional commit since the last revision:

  Update MSVC CFlags
  
  Signed-off-by: Justin King <jcking at google.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12073/files
  - new: https://git.openjdk.org/jdk/pull/12073/files/e282971e..467d7e84

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12073&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12073&range=01-02

  Stats: 15715 lines in 676 files changed: 5660 ins; 3540 del; 6515 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