Major overhaul of the build system.

Changes to be committed:
	new file:   Makefile
	new file:   Rules.top
	new file:   build/Makefile
	new file:   build/Readme.txt
	new file:   build/build-debug.mk
	new file:   build/build-profile.mk
	new file:   build/build-release.mk
	new file:   build/config-Cygwin-i686_Cygwin-i686.mk
	new file:   build/config-Cygwin-i686_Linux-ppc.mk
	new file:   build/config-MinGW-i686_MinGW-i686.mk
	new file:   build/config-SunOS-sun4u_SunOS-sun4u.mk
	new file:   build/config-default.mk
	new file:   build/config.mk
	new file:   build/def_rules.mk
	new file:   build/footer.mk
	new file:   build/header.mk
	new file:   build/skel.mk
	modified:   drone-control/test.js
	typechange: vision/Makefile
	new file:   vision/Rules.mk
	modified:   vision/main.cpp