Kill off SSLv3 because of the POODLE attack

For more reading on the attack:
https://www.openssl.org/~bodo/ssl-poodle.pdf
https://www.imperialviolet.org/2014/10/14/poodle.html

For more reading on the fix:
https://gist.github.com/3rd-Eden/715522f6950044da45d8
https://github.com/joyent/node/blob/v0.10.32-release/lib/tls.js#L1127
https://github.com/joyent/node/blob/7c0419730b237dbfa0ec4e6fb33a99ff01825a8f/src/node_crypto.cc#L314
server: used named (vs inline anon) functions

and add aliases for host and port (increase readability)
server: consistent config handling

* added load_smtp_ini() with booleans + callback
* merged apply_defaults into load_smtp_ini
* replaced config loading (3x)
* removed cfg passing

It's not yet a convention in our code, but what I've been using consistently
in the plugins and elsewhere is:

   cfg = a reference to whatever is returned by config.get()
   c = a reference to something within cfg
server: moved defaults obj into load_smtp_ini()
p0f: add a register() and load config there

instead of in the master and child inits

and jshint tidyness
Merge pull request #731 from msimerson/server

server: consistent config handling
Fix bug in helo.checks.js
Merge pull request #733 from msimerson/p0f

p0f: add a register() and load config there
Merge pull request #735 from smfreegard/master

Fix timeout bug in helo.checks.js
karma: move neighbor scoring from code to ini
Merge pull request #736 from msimerson/karma

karma: move neighbor scoring from code to ini
replace infile jshint with .jshintrc
Merge pull request #740 from msimerson/master

replace infile jshint with .jshintrc
spamassassin: refactored load_spamassassin_ini()

moved global defaults into function
spamassassin: jshint pass
spamassassin tests: better reporting
spamas: attach event handlers before calling

socket.connect()
spamd: more informative spamd connect failure log
spamass: remove jshint lines
address: added a few tests