Remove PID file on exit
Merge branch 'master' of github.com:baudehlo/Haraka
Document log_timestamps
Bump version
host_list: huge performance increase, esp for many hosts

Before I defecate on the implementation of rcpt_to.in_host_list, allow me to first point out the one area where it excels:

loaded 90822 hosts
loading config took 0.066 seconds (array)
loading config took 0.087 seconds (array+toLowerCase())
loading config took 0.152 seconds (object+toLowerCase())

That's right, the existing implementation is fastest as loading the config file to an array. But it's all downhill from there. In the next test, we look up a hostname in the list, 90,822 times (to average the lookup time):

searching config took 1662.722 seconds (array)
searching config took   87.560 seconds (array (lc during load))
searching config took    0.208 seconds (object (lc during load))
host_list: updated tests
Merge pull request #595 from msimerson/host_list

host_list: huge performance increase, esp for many hosts
helo.checks: make match_re work

1. precompile the regex list at load time (was: compile every regex on every connection)

2. test regexes, ignore and log error for bad ones

3. load .ini and regex list at register() with config parsing callback (was at connect())

4. added tests for match_re
valid_regexes: moved to utils
valid_regexes: moved tests from access -> utils
utils: added description of arguments to valid_regexes