[windows] [asan] Add wholearchive flag when including asan_cxx lib.

We need -wholearchive for asan_cxx, the same than for asan.
Clang Driver will add asan_cxx at the beginning of the arg list that we pass to
the linker. To ensure that all the static libraries are linked to asan_cxx, we
force the linker to include the object files in asan_cxx.

This fixes some linker errors when compiling with address sanitizer for MT and
passing the static library libFuzzer.

Differential Revision: https://reviews.llvm.org/D29754

llvm-svn: 294604