Bug 1081414 - Suppress clang-cl warnings about inline 'new' and 'delete'; r=glandium

This is the clang-cl version of the fix to bug 928808.
Bug 1082983 - Enable the Windows console in ASAN builds; r=glandium

These builds are not very useful without a console, which is
where the ASAN reports go to.
Bug 1082987 - Never use the debug runtime libraries for Windows ASAN builds; r=glandium

This is a non-supported AddressSanitizer configurations, and it
will fail the build.