Move UnpoisonMappedDSO to sanitizer_common.

This is so DFSan will be able to use it.

Differential Revision: http://llvm-reviews.chandlerc.com/D1206

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187372 91177308-0d34-0410-b5e6-96231b3b80d8
Fix warning.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187373 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Disable ForEachMappedRegion on Android.

It needs interface that is missing from the NDK, and it is not used on Android anyway.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187407 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] Raise thread stack size limit.

It's a sanity check, mostly, and we've seen threads with >256Mb stack.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187408 91177308-0d34-0410-b5e6-96231b3b80d8