hdf5_der

[svn-r21266] The original code 
  templong = (templong >> packed_data_offset) & packed_data_mask;
in line 854 right shifted a 32-bit integer for 32-bit.  The result is undefined by C language.  A user
discovered it using clang compiler with -fcatch-undefined-behavior option (see Issue 7674
in Jira).  Added check for size and set to zero if not compatible. Also changed for unsigned long.