I wonder if we shouldn't change the apr_hash_t (currently used to handle JSON objects) to an apr_table_t, such that key doublons are not an issue (this isn't one in JSON specification AFAICT).
Then we could get rid of 'klen' handling in several places (NUL terminated string is fine for keys IMHO, the question is more about strdup or not) while APR_JSON_FLAGS_STRICT would still do its job for overlays (and could be extended to apr_json_object_set w/ something like APR_JSON_FLAGS_MULTI, mutually exclusive). WDYT?
