tsan: use StackDepot for thread creation stacks


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177261 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: fix memory leak


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177262 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] Switch to allocator2 on Android.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177263 91177308-0d34-0410-b5e6-96231b3b80d8
[TSan] re-apply r177249 lost in edits

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177265 91177308-0d34-0410-b5e6-96231b3b80d8