inmem_repdb

Running into the following - nylxdev1,ibm1,sundev1 - 10 clients, insert 10k rows each.
```
Assertion failed: log_compare(&lp->ready_lsn, &rp->lsn) == 0, file /bb/mbigd/mbig3082/git/github/master/berkdb/rep/rep_record.c, line 3116

/* In-memory drop in replacement */
if (gbl_inmem_repdb) {
repdb_dequeue(&control_dbt, &rec_dbt);
rp = (REP_CONTROL *)control_dbt.data;
assert(!IS_ZERO_LSN(rp->lsn));
assert(log_compare(&lp->ready_lsn, &rp->lsn) == 0);

```