merged in fix for https://bugs.launchpad.net/epics-base/+bug/1179642

also merged in removal of c++ support for old HPUX compiler

src/ca/netSubscription.cpp

@@ -170,13 +170,6 @@ void netSubscription::forceSubscriptionUpdate (
         guard, chan, *this );
 }
 
-void * netSubscription::operator new ( size_t ) // X aCC 361
-{
-    // The HPUX compiler seems to require this even though no code
-    // calls it directly
-    throw std::logic_error ( "why is the compiler calling private operator new" );
-}
-
 void netSubscription::operator delete ( void * )
 {
     // Visual C++ .net appears to require operator delete if