BUG: Restore correct parsing of relative file paths for heavy data files.

Heavy data files that are specified with relative paths should be
located with respect to the XML file location.

Fix compiler error on intel with XdmfExodusWriter missing include.

core/XdmfArray.cpp

@@ -1083,8 +1083,25 @@ XdmfArray::populateItem(const std::map<std::string, std::string> & itemPropertie
         }
       }
 
-      std::string hdf5Path = contentVals[contentIndex].substr(0, colonLocation);
-      std::string dataSetPath = contentVals[contentIndex].substr(colonLocation+1);
+      std::string hdf5Path = 
+        contentVals[contentIndex].substr(0, colonLocation);
+      std::string dataSetPath = 
+        contentVals[contentIndex].substr(colonLocation+1);
+
+      // FIXME: for other OS (e.g. windows)
+      if(hdf5Path.size() > 0 && hdf5Path[0] != '/') {
+        // Dealing with a relative path for hdf5 location
+        std::map<std::string, std::string>::const_iterator xmlDir =
+          itemProperties.find("XMLDir");
+        if(xmlDir == itemProperties.end()) {
+          XdmfError::message(XdmfError::FATAL,
+                             "'XMLDir' not found in itemProperties in "
+                             "XdmfArray::populateItem");
+        }
+        std::stringstream newHDF5Path;
+        newHDF5Path << xmlDir->second << hdf5Path;
+        hdf5Path = newHDF5Path.str();
+      }
 
       // Parse dimensions from the content
       std::vector<unsigned int> contentDims;

utils/XdmfExodusWriter.cpp

@@ -21,6 +21,7 @@
 /*                                                                           */
 /*****************************************************************************/
 
+#include <cstring>
 #include <exodusII.h>
 #include <set>
 #include <sstream>