Compile latex to pdf automatically
Allow override of DOXYGEN via make command line variable
Doxyfile: Use minimal config
Add bibtex bibiography support and IMAGE_PATH for images
Automatically generate .eps images from .png ones
Add code and doc build dependencies
Add Michael and Scott to authors section
Documentation snapshot - uses features from doxygen >= 1.7.5
Move DoxygenLayout.xml -> CaddyDoxygenLayout.xml
Default layout generated by doxygen 1.8.3.1
Doxyfile: Use minimal set of file patterns: *.c *.h *.dox
Enable HAVE_DOT to get include graphs
Don't generate TODO list