Implement multithreaded kernel building to speed up firmware compile time

* Automatically detect how many CPUs are available
* Disabled by default

Thx RMerlin
Added ipset support

This commit include:
Initial ipset commit - kernel + tool e8d927531130d2e0b4335b6c65d5a5f47885ae4f
ipset binary+libs installation 38656a52a3f98f5aea3075968e431eb39d1cff0e
Added ipset modules to kernel config 4fb92c9373a447e3ba1d5ae7a2dd17c4170aa0aa
Added ipt_set support to iptables 20b5dc68f236042d3def2d1d803ecfd159cd8fd8
Strip binary 5fb04b0117cfb02c1eab3bb16fb19284c3b6c09d
Cleaning leftovers ac3242a8e69dc9fe7091e3c2349b4bb199ec5a64

from RMerlin`s branch - big thanks.
dnsmasq 2.66rc4 - allow dhcp-options to be overridden in config file
dnsmasq 2.66rc5 fix lease file parsing bug
ac_malloc workaround to at least get it to compile
dnsmasq 2.66rc5
Don't enable dnsmasq IPSET functionality on 2.4 kernel

Based on 1d9ae9a9997273f629dc28cccb30fcd09db53da1
Experimental Remove radvd & libdaemon, use dnsmasq for IPv6 RA instead
Fixes related to removing radvd & using dnsmasq instead
	deleted:    ../src/router/dnsmasq/.new
	modified:   ../src/router/rc/dhcp.c
	modified:   ../src/router/www/advanced-dhcpdns.asp
dnsmasq 2.66 final + Tomato modifications

2.66 goes from test, release candidates to release, thanks Simon!
dnsmasq 2.66 final bugfix 1 - there's always one!
Small tidy of tomato.js
Fix compilation warning in wan.c related to escaping
fix ipv6 lease remaining time in dhcp leases file.  Now behaves
like ipv4 in tomato.
dnsmasq 2.67test2 - a couple of optimisations & corner case bugs (not used in
tomato)
Simon Kelley the developer is very active at the moment.
Add a default 'dhcp-range....ra-only' to dnsmasq.conf if RA enabled.
This will provide equivalent RA functionality of RADVD...with a bit of luck!
Fix for dhcpv6 with prefix delegation

//	eval("ip", "route", "add", "::/0", "dev", (char *)wan_ifname);  //removed by Toastman
//      see discussion at http://www.linksysinfo.org/index.php?threads/ipv6-and-comcast.38006/
//	post #24 refers.
stealthMode v0.5 - Sunset

thx Monter
fix QOS prios
IPTraffic bugfix

- thanks to RMerlin for the fix