[ASan] Change the ABI of __asan_before_dynamic_init function: now it takes pointer to private string with module name. This string serves as a unique module ID in ASan runtime. LLVM part

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178013 91177308-0d34-0410-b5e6-96231b3b80d8