Replaced FastCGI init.d script with LSB formated script

The LSB format is the current defacto standard for init.d scripts.
The init.d script derives from /etc/init.d/skeleton.

What's new:
- LSB format with run level informations
- Ability to start/stop hhvm-fastcgi service and get status of process
- Ability to overwrite start up configurations like:
-- Listen port
-- Path to config file
-- Path to pid file
-- User to run serive as
-- Additional arguments
Added default config for fastcgi service startup

The file /etc/defaul/hhvm-fastcgi can be used to overwrite settings
of the init.d script.
E.g.: Change the port from 9000 to 9100
Merge pull request #4 from dol/feature/improved-initd-script

Feature: Improved initd script for FastCGI