17226c976e
Set the halt_on_error runtime flag to make TSan errors fatal when running the test suite. For the API tests the environment variables are set conditionally on whether the TSan is enabled. The Shell and Unit tests don't have that logic but setting the environment variable is harmless. For consistency, I've also mirrored the ASAN option (detect_stack_use_after_return=1) for the Shell tests. Differential revision: https://reviews.llvm.org/D157152
LLDB Unit Tests
This directory only exists for the lit test driver. The actual tests live in
the unittest directory in top level LLDB directory.