Remove some XCode artifacts that were getting in the way of my greps!
Start building liblaunch (still broken)
Separate out the getting involved section
Kill unnecessary whitespace
Avoid including headers generated from *.defs files by MIG

This gets compilation to the point where we need to pull the mach_port junk
apart from the process management stuff in libvproc. Oof!
Avoid building and referencing libvproc methods inside of liblaunch

Related to #5, might need to back this out at a later date.
Add launchd/Makefile, starting to get launchd itself to build on non Apple OSes
Add a doxygen configuration file to build some source docs
Ifdef out a number of launchd/*.h header files

At this point there's enough building to spew enough errors to make exceed the
clang warning/error limit :P
merge upstream