hdf5_chunking_query_bmr

[svn-r20529] Purpose: Add testing for bug 1864

Description:
Added internal tesitng routines to traverse a file and verify that symbol table
information is *always* cached, whenever possible.  Added this check to the end
of many tests to check all the test files, right before the call to h5_cleanup.

Tested: jam, amani, heiwa (h5committest)