Add multiple dynamic dns support, clean up a little
TODO: major clean up of the code.

 Changes to be committed:
	modified:   dtfw
	modified:   dtfw_dynamichosts.sh
	new file:   dtfw_dynamiclists/dtfw_dynamic_hosts.lst
	new file:   dtfw_dynamiclists/dtfw_dynamic_whitelist.lst
	deleted:    dtfw_dynamiclists/dtfw_dynamichosts
	deleted:    dtfw_dynamiclists/dtfw_dynamichosts.lst
some file renaming from .txt to .lst
 Changes to be committed:
	renamed:    dtfw-list/dtfw_blacklist.txt -> dtfw-list/dtfw_blacklist.lst
	renamed:    dtfw-list/dtfw_blacklist_OUTS.txt -> dtfw-list/dtfw_blacklist_OUTS.lst
	renamed:    dtfw-list/dtfw_whitelist.txt -> dtfw-list/dtfw_whitelist.lst