Committing in .

update OpenVMS compile support

 Modified Files:
 	wxWindows/setup.h_vms wxWindows/include/wx/thread.h
 	wxWindows/src/common/descrip.mms
 	wxWindows/src/common/iffdecod.cpp
 	wxWindows/src/unix/threadpsx.cpp
 ----------------------------------------------------------------------


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13604 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/threadpsx.cpp

@@ -928,9 +928,17 @@ int wxThread::GetCPUCount()
     return -1;
 }
 
+#ifdef __VMS
+  // VMS is a 64 bit system and threads have 64 bit pointers.
+  // ??? also needed for other systems????
+unsigned long long wxThread::GetCurrentId()
+{
+    return (unsigned long long)pthread_self();
+#else
 unsigned long wxThread::GetCurrentId()
 {
     return (unsigned long)pthread_self();
+#endif
 }
 
 bool wxThread::SetConcurrency(size_t level)