Function compute_next_insert_id

Generate the next auto-increment number based on increment and offset. computes the lowest number - strictly greater than "nr" - of the form: auto_increment_offset + N * auto_increment_increment If overflow happened then return MAX_ULONGLONG value as an indication of overflow. In most cases increment= offset= 1, in which case we get: @verbatim 1,2,3,4,5,... @endverbatim If increm