search for: op_external_post_list

Hi Everybody, Here is the first version of my match for an ExternalPostList, it should apply cleanly to 0.9.5 and 0.9.6. You can use it by first implementing an ExternalPostingSource, then creating a new Query object passing a reference an instance of your implementation to the constructor, see query.h. The ExternalPostingSource implementation is reference counted, so when its no