[PATCH] [msan] Intercept *getxattr and *listxattr.

[Sergey Matveev]

  BTW, the code duplication between sanitizer_common_syscalls.inc and sanitizer_common_interceptors.inc is abhorrent. I think we should be able to reuse the PRE and POST hooks from sanitizer_common_syscalls.inc in sanitizer_common_interceptors.inc, since a lot of intercepted functions are simple syscall wrappers. Anyone disagree?

http://llvm-reviews.chandlerc.com/D2642