small parser improvements
converting fixed-address/macaddress to real object

This should make Hosts easier to process
adding new modules to 00-load.t
fixing plan for 00-load and typo in Role.pm
support for HardwareEthernet and FixedAddress
renaming speed-torture-test
Support for filename_callback

This is so if the include paths are different on your test machine vs
your live machine you can edit them before they are parsed into the
config.
Version bump to 0.1703