fixed href comparison bug

fixed order by

implemented davql order by

-a option wasn't working correctly in recursive mode

fixed horrible bugs, davql hopefully just works now (without order by yet)

empty field results will no longer be added

replaced old davql (still buggy)

implemented execution of field list expressions

implemented some davql integer operations

secured ucx_list_append calls against OOM

added missing keywords + fixed missing source text for boolean primaries

fixed grammar for path + added missing string quote escaping (still not perfect: escape sequence is in syntax tree)

(0) -100 -12 +12 +100 +300 tip

mercurial