protect app c$BSID='', avoid double ReqBase work
r.getd use tul_url.unescape
add server process bound GAC, see req start_time
bugfix style.lcss in case multiple local selectors
util.override can do customized cfg, bugfix exist
add DBPool class base
add db3 base
add new PLSQLServer base
req._sendHeaders is private for Request
zero hLen is not for quit signal, only minus value
log null hLen for Response stream
DBPool has instances, slot/interrupter hold it

* support multiple DBPool instances
* slots/freeList/busySet/waitQueue belong to DBPool instance
* Slot/Interrupter instance hold its dbPool
* cfg for DBPool constructor
* slot.readQuit on oraSock.on(readable) code directly
* on handShake use its own closure
* exports only have DBPool, stats
dbPool stats go to instance
add dbPool.findFree API usage
request will emit response when resp header got

and slot.response will sync
dbPool timeout stats change, anti repeat
use new dbPool.stat and fake http stats
access url path /server-status will show monitor
http server use dbPool.findFree directly
follow resp header will not mix will first resp