Update build-related infrastructure to support building with ASan under Microsoft Visual C++.
------------- Commit messages: - Move comment to appropriate location - Use elif instead of separate if - Only pass -fsanitize=address to linker for Clang/GCC - Update asan_default_options.c with MSVC-specific extensions - Support using ASan with MSVC Changes: https://git.openjdk.org/jdk/pull/12580/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12580&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8302599 Stats: 25 lines in 2 files changed: 18 ins; 0 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/12580.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12580/head:pull/12580 PR: https://git.openjdk.org/jdk/pull/12580
