hdf5_chunking_query_bmr

[svn-r25207] Description:
    Merge changes from Coverity branch to trunk:

r20907:
    Original issue was #338.

    Refactored code to clean up allocations consistantly, completely, check all returns, assign initialization values and handle errors.

Tested on:
    MacOSX/64 10.9.3 (amazon) w/gcc 4.9, FORTRAN, C++, parallel & multi-threaded
    (too minor to require h5committest)