Fix CMake build by including ValueObjectPrinter.cpp in list of sources



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@191703 91177308-0d34-0410-b5e6-96231b3b80d8
Disable TestStopHookMultipleThreads.py (on Linux) due to llvm.org/pr15037
- stop hooks sometimes fail to fire on Linux



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@191704 91177308-0d34-0410-b5e6-96231b3b80d8