[sanitizer] More interceptors.

bcopy
strtoimax, strtoumax
mbstowcs, mbsrtowcs, mbsnrtowcs
wcstombs, wcsrtombs, wcsnrtombs



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@185624 91177308-0d34-0410-b5e6-96231b3b80d8