external commands can send the following codes to the bot using 'echobot'
or writing to stderr:

nick?
  -> nickname of the user who did the command
user@host?
  -> user@host of the user who did the command
handle?
  -> handle of the user who did the command (dcc: handle==nick)
getparam?
  -> next word-parameter from after the command (example: 'cmd p1 p2' --
     will return 'p1' the first time, 'p2' the next)
fullparam?
  -> full parameter string that followed the command
passmatch <handle> <pass>
  -> "yes" the password is correct
  -> "no" the password is incorrect
dump <text>
  -> send text to the server
dumphelp <text>
  -> send text to the helpbot server
sendfile <nick> <filepath>
  -> "yes" attempting to dcc send that file to that nick
  -> "no" no more dcc entries available
version?
  -> current bot version, e.g. 'eggdrop v0.9a'
