Set shared library path on FreeBSD as on Linux for tests



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@190286 91177308-0d34-0410-b5e6-96231b3b80d8
Enable register log for FreeBSD tests


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@190287 91177308-0d34-0410-b5e6-96231b3b80d8