Typo fix in man radiusd(8)

The ``see also'' section contained a reference to rradiusd.conf(5), which of
course should be written with a single ``r''
Fixup variable and definition names in rbtree code
constify things properly in fr_udp_checksum
walker needs r/w arguments
const error in radsniff
Avoid cs cache double free
Close stdin when daemonizing
Don't always redirect STDERR and STDOUT to /dev/null
Add Blue Coat, update Packeteer dictionaries

Based on public Documentation from Blue Coat, add their
VSA and update the Packeteer dictionary since they got
aquired by Blue Coat in 2008. Apparently some Blue Coat
products still make use of the Packeteer dictionary.

Based on following public documentation:
- KB4409 Configuring ProxyAV to authenticate
  via RADIUS for administrator login
- Packetguide 8.5, Configure RADIUS Server
Include the equallogic dictionary

It was previously added but not included.
Allow calculation of expected checksum or validation, without modifying input packet
Call fr_fault directly in rad_assert
Merge pull request #527 from matsimon/bluecoat-dict

Bluecoat dict
Rate-limit connection attempts for "down" home servers

To only once per second.
Open SSL sockets only if we have a valid FD
Regularize error message for proxy_new_listener
Missed in previous commits
queue_or_run can be called from a child thread
Remove 't' flag from daemon

We should be doing these tests threaded
typos