[svn-r21105] Fixed two bugs:

- h5repack: h5repack failed to copy dataset if the layout is changed from chunked with
            unlimited dims to contiguous. (PC -- 2011/07/15)
     - h5diff: "--delta" option considers two NaN of the same type are different, which is wrong
            based on http://www.hdfgroup.org/HDF5/doc/RM/Tools.html#Tools-Diff. (PC -- 2011/07/15)

tools/lib/h5diff_dset.c

@@ -327,7 +327,7 @@ hsize_t diff_datasetid( hid_t did1,
         can_compare=0;
         options->not_cmp=1;
     }
-    
+
     /* Check if type is either VLEN-data or VLEN-string to reclaim any
      * VLEN memory buffer later */
     if( TRUE == h5tools_detect_vlen(m_tid1) )
@@ -390,7 +390,6 @@ hsize_t diff_datasetid( hid_t did1,
         * read/compare
         *-------------------------------------------------------------------------
         */
-
         need = (size_t)(nelmts1 * m_size1);  /* bytes needed */
         if(need < H5TOOLS_MALLOCSIZE) {
             buf1 = HDmalloc(need);
@@ -562,7 +561,7 @@ error:
     if (buf1!=NULL)
     {
         /* reclaim any VL memory, if necessary */
-        if(vl_data) 
+        if(vl_data)
             H5Dvlen_reclaim(m_tid1, sid1, H5P_DEFAULT, buf1);
         free(buf1);
         buf1=NULL;
@@ -570,7 +569,7 @@ error:
     if (buf2!=NULL)
     {
         /* reclaim any VL memory, if necessary */
-        if(vl_data) 
+        if(vl_data)
             H5Dvlen_reclaim(m_tid2, sid2, H5P_DEFAULT, buf2);
         free(buf2);
         buf2=NULL;