Modified 19_query.sh to run FastBit tests in addition to ALACRITY tests. Note: currently it assumes that both FastBit and ALACRITY are always available; it should fail gracefully if this is not the case.
Added function to ADIOS Query API for detecting whether a given query method is available (i.e., installed)
Added names to the query methods that are accessible via the hooks struct
Updated list_methods to also print query methods
Added automatic detection of available query methods to test case 19_query.sh
Fixed some echos in 19_query.sh
Merge branch 'add-fastbit-query-tests-final' into adios-query

Integrating an expanded 19_query.sh in the test suite to support FastBit indexing/query testing for the ADIOS Query framework