with help from Andrew another attempt to fix windows build

src/database/pvDatabase.cpp

@@ -10,16 +10,14 @@
  */
 
 #include <epicsGuard.h>
+#define epicsExportSharedSymbols
+#include <pv/pvDatabase.h>
 #include <pv/pvStructureCopy.h>
 #include <pv/pvPlugin.h>
 #include <pv/pvArrayPlugin.h>
 #include <pv/pvTimestampPlugin.h>
 #include <pv/pvDeadbandPlugin.h>
 
-#define epicsExportSharedSymbols
-
-#include <pv/pvDatabase.h>
-
 using std::tr1::static_pointer_cast;
 using namespace epics::pvData;
 using namespace epics::pvCopy;