need libxml2 info

ifdef some includes for SWIG

libsrc/XdmfArray.h

@@ -44,7 +44,9 @@ of the array is the same type). Access to HDF5 files is
 accomplished directly thru XdmfArrays by the XdmfHDF class.
 */
 
+#ifndef SWIG
 #include <stdlib.h>
+#endif
 
 class XDMF_EXPORT XdmfArray : public XdmfDataDesc {
 

libsrc/XdmfLightData.h

@@ -27,7 +27,9 @@
 
 #include "XdmfObject.h"
 
+#ifndef SWIG
 #include <string.h> // strcmp, strlen, strcpy
+#endif
 
 // typedef XdmfPointer XdmfXmlNode;
 struct _xmlNode;