Changes fall into these categories:
1. Avoid pathological string building. Loops over x = x .. "foo" can
become very slow. Instead, use strbuf.lua, table.concat, or just one
continuous concatenation; a = x .. y .. z is one operation, better than
a = x .. y; a = a .. z
2. Use hex-escaped strings instead of string.char. I find this more
readable in many cases, and it avoids a table lookup and function call.
3. Don't duplicate code. A few libraries and scripts had re-implemented
stdnse.generate_random_string or openssl.rand_bytes.
These scripts got removed from default:
dhcp-discover
dns-zone-transfer
These scripts got removed from intrusive:
dns-recursion
ftp-bounce
http-open-proxy
socks-open-proxy
Thanks to Toni for noticing these.
dns-recursion.nse
snmp-brute.nse
daytime.nse
x11-access.nse
smb-enum-domains.nse
dns-random-txid.nse
p2p-conficker.nse
jdwp-version.nse
dns-random-srcport.nse
sshv1.nse
ms-sql-info.nse
Some of these just needed fixed NSEDoc syntax.