[PATCH] [msan] Rewrite strto* interceptors and add a few more.

[Evgeniy Stepanov]

  libstdc++ depends on these:
    __strtof_l
    __strtod_l
    strtoul
    strtold_l

  Please add all of them for completeness.
  Also, could you move this to sanitizer_common_interceptors.inc, while you are at it?

http://llvm-reviews.chandlerc.com/D2629