[sanitizer] Fix kThreadDescriptorSize for glibc <= 2.11.

Address issue reported by Greg Fitzgerald.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183098 91177308-0d34-0410-b5e6-96231b3b80d8
[lsan] Add __lsan_disable() and __lsan_enable().

Objects allocated after a call to __lsan_disable() will be treated as
live memory. Also add a ScopedDisabler.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183099 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] ASan Linux MIPS32 support (compiler-rt part), patch by Jyun-Yan Y

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183105 91177308-0d34-0410-b5e6-96231b3b80d8
Fix ALIGNED misuse in asan_thread.cc (built on all platforms); also, add a comment to the ALIGNED macro describing the correct usage

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183214 91177308-0d34-0410-b5e6-96231b3b80d8