0005: Rename checkunique parameter to more user friendly as proposed by Peter Eisentraut and Alexander Korotkov
I'm not sure renaming checkunique is a good idea. Other arguments of bt_index_check and bt_index_parent_check functions (heapallindexed and rootdescend) don't have underscore character in them. Corresponding pg_amcheck options (--heapallindexed and --rootdescend) are also written in one piece. check_unique and --check-unique stand out. Making arguments and options in different styles doesn't seem user friendly to me.