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)

fixed path parser not writing length for a single slash as path

implemented minimal executor features and added missing ucx files

renamed GET to SELECT in davql syntax

added expression executor prototype

fixed: comparison operator info has been incorrectly written to type field

expression compiler generates byte code

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mercurial