[pptp-server] funky passwords causing

[Bruce J Oblander]

Please forgive me if this is covered but I don't
recall seeing this anywhere in the docs. I *just*
got PPTP working with the mppe patch and the
VPN masquerade patch and was still getting the
following errors with one login account:

GRE: read(fd=5, buffer=804d7c0,len=8196) from PTY failed: status = -1
error=Input/output error
CTRL: PTY read or GRE write failed (pty,gre)=(5,6)

or I might see:

CTRL: error with select(), quitting

diagnosis: the account password had a '#' in it (e.g. c#isajoke) and
removing it fixed the problem