When display_message gets to this point, ptr might have been incremented
to its end of line value and so the loop is terminated without printing
the message. Instead, jump down to the last section of the loop where it
checks for end of line and prints the message.

(This function could really do with refactoring to avoid this goto and
make it more readable but for now this will do.)

Fixes:

  talk{0}-* !w
  Writing in folder Foo.
  Message from andy
  *** buffer overflow detected ***: /home/andy/src/mw/src/client/mw
  terminated

Fixes:

  servsock.c: In function ‘migrate_old_folders’:
  servsock.c:684:2: error: ‘readdir_r’ is deprecated [-Werror=deprecated-declarations]
    while (readdir_r(dirp, &entry, &dp) == 0) {
    ^~~~~

1. incoming_pipe is -1 in idle() when a new user runs mw with autochat
2. When ls() tries to write too many chars into a SUBJECTSIZE+1-char
   buffer.

Fixes #24

Sometimes it's useful to run the server in the foreground quietly.

Still nowhere near finished, but the main edit commands have moved,
      and frameworks have been started for the other parts

It no longer makes sense to use userposn as a source and destination
field when passing messages, so drop it entirely.
Instead specify an 'audience' for the message so the server
knows how to distribute it.

Conflicts:
	src/webclient/mwpoll.c