Axe errant tabs and unused vars
Standardize prints, clean up whitespace/warnings
Serve wpad.dat and proxy.pac in the same server
Clean up tabs, warnings, modified datastore
Convert llmnr_response to use Net::DNS

* Allows responding to AAAA requests in addition to the existing A
  support
* Prevents problems when recvfrom returns a mapped address like
  "::ffff:192.0.2.1"

Also:

* Fix a few typos
* capture: Don't shadow a method name (arp) with a local variable
* capture: Handle the case where our UDP send hits an ENETUNREACH
Land #2464, fixes for llmnr_response and friends

Fixed conflict in lib/msf/core/exploit/http/server.rb.