Fix some build issues with old Solaris C++ compiler.

src/libCom/test/epicsExceptionTest.cpp:
  exThread needs a destructor

src/cas/generic/st/casStreamOS.cc:
  Can't use inline as armSend already called

src/libCom/test/epicsExceptionTest.cpp

@@ -55,6 +55,7 @@ class exThread : public epicsThreadRunable {
 public:
     exThread ();
     void waitForCompletion ();
+    ~exThread() {};
 private:
     epicsThread thread;
     bool done;