Fixed newlines in debug printing on arduino. Fixed printing panic messages.
Moved avrdude and avarice targets from general config.xml to arduino specific build.xml.
Add empty file to wkcomm java directory (it doesn't have any Java code), so that git will keep the directory.

The library won't compile without a java directory.
Added empty hart library.

Not sure yet if this should be a separate lib or part of wkcomm, but it's easier to combine things later than to separate them. (another option would be to use/refactor the code in avr.c)
The idea is that if the posix implementation for wave can use the usb as a uart, all the Zwave protocol code could be moved to common since only the uart communication would be platform specific.
Let the panic function print the number of unknown panic types. (i.e. types defined in libraries rather than the main vm code)
Added some code to trigger initialisation of wkcomm.
Added uart code for arduino and empty implementation for posix (it's not yet used by the posix version of wkcomm_zwave at the moment)
Added init code for Zwave. It reads the node id correctly, haven't tested other functions yet.