#1 HP/UX and AIX support for LiftOff - easy

[saperski]

Jython (www.jython.org) installer using listoff fails
miserably
on HP/UX and AIX platforms, with a message:

can not get flavour null for os 'HP-UX'

or

can not get flavour null for os 'AIX'

respectively.

I think it's just a matter of adding entries to
'os.properties'
file. Probably more values can be added...

--marcin