Make improvements to redbean

- Fix Content-Type inference when file extension has number
- Remove shoddy Class A granular IP classiifcation
- Have setuid() and setgid() take effect w/o daemonization
- Make GetParams() return empty table instead of nil
- Change SetLogLevel(int) to only apply to one message
- Make SetLogLevel(int) good enough to be access_log off
- Introduce ProgramUid(int) which is same as -U INT
- Introduce ProgramGid(int) which is same as -G INT
- Introduce ProgramLogPath(str) which is same as -L PATH
- Introduce ProgramDirectory(str) which is same as -D PATH
- Introduce ProgramLogBodies(bool) which is same as -b
- Introduce ProgramLogMessages(bool) which is same as -m

tool/net/counters.inc

@@ -42,24 +42,6 @@ C(maps)
 C(meltdowns)
 C(messageshandled)
 C(missinglengths)
-C(netafrinic)
-C(netanonymous)
-C(netapnic)
-C(netapple)
-C(netarin)
-C(netatt)
-C(netcogent)
-C(netcomcast)
-C(netdod)
-C(netford)
-C(netlacnic)
-C(netloopback)
-C(netother)
-C(netprivate)
-C(netprudential)
-C(netripe)
-C(nettestnet)
-C(netusps)
 C(notfounds)
 C(notmodifieds)
 C(openfails)