Post-merge fixes.


include/my_global.h:
  Post-merge fixes.
  Moving placement versions of operator new and operator delete to general
  server-wide header.
sql/slave.h:
  Post-merge fixes.
  Moving placement versions of operator new and operator delete to general
  server-wide header.
storage/ndb/include/ndb_global.h.in:
  Removing local definition of placement versions of
  operator new and operator delete.