hdf5_ep

[svn-r12171] Purpose:
bug fixes

Description:
h5dump/h5ls were not displaying long doubles correctly

Solution:
1) the print datatype functions were incorrectly testing for the valid return value from H5Tequal,
   (TRUE), causing the display of an incorrect name of a dataype in error cases from H5Tequal
2) h5tools_print_str did not have a case for native long double
3) added a file generator for a long double dataset
4) added one script test for the long double data (commented , some sytems don't have a native long double match, and the output differs)
5) added a vms file and h5dump script test


Platforms tested:
linux 32, 64
solaris
AIX

Misc. update: