Make it possible to provide special (linker) flags for the thread tests. Use it to build & link against libpthread on NetBSD for tests iff they are testing the thread interface.
Make it possible to provide special (linker) flags for the thread tests.
Use it to build & link against libpthread on NetBSD for tests iff they
are testing the thread interface.


git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@180942 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx