Quick fix data/bss detection in TSan.
Quick fix data/bss detection in TSan.

The old way breaks when a module's bss is adjacent to the [heap] vm area.
Both ways are not very reliable, though.


git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@164772 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt