Update TLS/SSL section in README; rename to "Encrypted connections"
Use auth-source to read passwords from .netrc/.authinfo files

Specify a line like:

machine example.com login username password s3cret port xmpp

(port should always be xmpp, regardless of the actual port)
Add .nosearch file in jabber-fallback-lib

This directory should never be added to any load path, since
jabber-muc-nick-coloring.el explicitly specifies the directory when
referencing hexrgb.  We wouldn't want to override any newer,
separately installed, hexrgb.el.

Adding this file should make life easier for emacsmirror.