Add the same changes as in 0c88a665 but without the flags

Closes #627 (closed) The same for OPAL-2.4 as in !464 (merged) but without the flags.

ippl/src/Message/CMakeLists.txt

 set (_SRCS
     CRC.cpp
-    Communicate.cpp
     CommCreator.cpp
     CommMPI.cpp
+    Communicate.cpp
+    Format.cpp
     MessageFunctions.cpp
-    Formatter.cpp
+    MsgBuffer.cpp
     )
 
 set (_HDRS
+    CRC.h
     CommCreator.h
     CommMPI.h
     Communicate.h
-    CRC.h
     DataTypes.h
-    Formatter.h
-    GlobalComm.hpp
+    Format.h
     GlobalComm.h
-    Message.hpp
+    GlobalComm.hpp
     Message.h
+    Message.hpp
+    MsgBuffer.h
     Operations.h
     TagMaker.h
     Tags.h
@@ -39,4 +41,4 @@ install (FILES ${_HDRS} DESTINATION include/Message)
 # cmake-tab-width: 4
 # indent-tabs-mode: nil
 # require-final-newline: nil
-# End:
+# End:
\ No newline at end of file