[Change] mapShrcd2mst: last match with chunked ismember

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>
[Change] Share type counts refactored and re-run with use of mapShrcd2mst

Signed-off-by: Oleg Komarov <o.komarov11@imperial.ac.uk>