Test explicitely 'tsearch2::build_query_tcl', now that 'tsearch2::build_query' uses different methods yielding different results, and slight refactoring of the test, using 'aa_equals' instead of 'aa_true' for string comparison
Add a new subsite::parameter_changed implementation for xowiki, reacting to the switching of the use_hstore parameterThis way it won't be necessary for other packages to generate the hstore manually using private api