[semantic-sil] Copy DIMemoryUseCollector.{cpp,h} => DIMemoryUseCollectorOwnership.{cpp,h} so I can update the passes that use this functionality one at a time.

Author: gottesmm

lib/SILOptimizer/Mandatory/CMakeLists.txt

@@ -4,6 +4,7 @@ set(MANDATORY_SOURCES
   Mandatory/AddressLowering.cpp
   Mandatory/DefiniteInitialization.cpp
   Mandatory/DIMemoryUseCollector.cpp
+  Mandatory/DIMemoryUseCollectorOwnership.cpp
   Mandatory/DataflowDiagnostics.cpp
   Mandatory/DiagnoseStaticExclusivity.cpp
   Mandatory/DiagnoseUnreachable.cpp