new upstream release

Update monit to 5.6

from 5.6 CHANGES


> Version 5.6
> 
> IMPROVEMENTS:
> 
> * SMTP AUTH LOGIN support added (MS Exchange SMTP authentication
>   should now work).
> 
> * favicon.ico added to the HTTP interface.
> 
> BUGFIXES:
> 
> * If an undefined checksum test was used and the file did not exist
>   on Monit start, Monit would return an error.
> 
> * If the configuration file ended with a comment but with no trailing LF
>   character, Monit would return syntax error.
> 
> * If a service timed out after too many restarts and alert was used as
>   the action, then the Timeout flag remained set even if the service
>   recovered.
> 
> * SmartOS zone system memory usage report fix.
> 
> * Escape mail messages properly for sending via SMTP.
> 
> * Escape XML messages properly.
> 
> * Compilation: fix the configure script to support default compiler 
>   paths when searching for OpenSSL (fixes library search on multi-
>   architecture  platforms like Debian and Ubuntu).