[PATCH] [asan] Make ASan report the correct thread address ranges to LSan.

[Sergey Matveev]

  Note that this CL redefines the meaning of stack_top and stack_bottom in ASan's thread registry. Previously for non-main threads that range could include the TLS. Now the TLS range is handled separately.

  It doesn't look like this could break anything in ASan, but it's worth a mention.

http://llvm-reviews.chandlerc.com/D862