MFC r275260: Remove lock recursion for the pipe pair mutex, and disable the recursion on mutex initialization.
MFC r275260:
Remove lock recursion for the pipe pair mutex, and disable the
recursion on mutex initialization.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase