hdf5_ep

[svn-r10800] 
Purpose: Bug fix

Description: The definitions of 2 private functions(test_family_opens()
and test_multi_opens()) fell below the use of them.  g++ on sleipnir
complained they weren't declared.

Solution: Moved the definitions above the use of them.  Problem solved.

Platforms tested: sleipnir - the only platform complained.