Move example and test headers out of include/pv

The only headers installed there should be
those for the official API of the module.

arrayPerformance/src/longArrayPut.cpp

@@ -10,9 +10,10 @@
  */
 
 #include <epicsThread.h>
-#include <pv/longArrayPut.h>
 #include <pv/caProvider.h>
 
+#include <longArrayPut.h>
+
 namespace epics { namespace pvDatabase { 
 
 using namespace epics::pvData;