Set TLSSupported to false on Haiku.

Haiku does not support this (yet). Leaving it set to true leads to
configure scripts detecting __thread being available and Clang emitting
code for it, resulting in binaries the runtime_loader will refuse to
load.

Patch by Jonathan Schleifer!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167576 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed