Add documentation and add some sort of documentation to the exttarget file itself
exttarget/chanacs: Prevent recursion
Merge branch 'master' of git://github.com/Iota-Spencer/atheme
Clarify cservice/flags help
Add blank line at the end of exttargets section of cservice/flags help
saslserv/{dh-aes,dh-blowfish}: avoid possible buffer overflow with untrusted input size
saslserv: use size_t in all places taking a parameter size
services: accept auth from other servers

For experiments with custom SASL auth agents. INSECURE.
saslserv/gssapi: add module

This requires libgsasl, and theoretically could support other mechanisms
as well.