parse_csv_taglist() now skips empty tags

adds error message for invalid tag filter syntax

introduces tag filter string parser (currently supporting a simple tag list)

adds tag filter evaluation functions

introduces SyncTagFilter type which for now implements the old tag list filter

fixes double-malloc() in tags.c + marks a realloc() problem

fixes dav_ql_free_arglist() not freeing the list container

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mercurial