Add Haiku support

These 12 patches do the following:

 * Readd BeOS gui sources  for 'Haiku'
 * Add patches for contrib software to enable building under Haiku
 * Stub out a few TODO items

Things are early.. The build process goes as follows
 * Perform the standard build process... this gives you libhb and HandbrakeCLI for Haiku.
 * Enter the Haiku directory and run 'make' to build the gui using generated libhb and friends.

HandbrakeCLI as well as the GUI build and run... however i've yet to test them ripping video (I think libdvdcss is still needed)