NXP-13707: Improve non optimized STARTSWITH operator on Oracle, using CONNECT BY
NXP-13708: NXQL aggregates (COUNT, AVG, SUM, MIN, MAX)
NXP-13707: cosmit
NXP-13708: fix AVG test which rounds differently than other dbs for MySQL and SQL Server
NXP-13723: updateReadAcls only on save(), not all flushes