Added h5 and hd5 extensions to Load. Refs #6819

Code/Mantid/Framework/DataHandling/src/Load.cpp

@@ -379,6 +379,8 @@ namespace Mantid
       exts.push_back(".spe");
       exts.push_back(".grp");
       exts.push_back(".nxspe");
+      exts.push_back(".h5");
+      exts.push_back(".hd5");
 
       declareProperty(new MultipleFileProperty("Filename", exts),
         "The name of the file(s) to read, including the full or relative "