Adding your specific files

DO NOT add your specific targets, modules or toolchains into the root directories! Use a subdirectory `extensions' and make a corresponding subdir : modules.d, targets.d and toolchains. You can use - actually - any kind of software you need, and this build system is tweaked up to be flexible and extensible. But JUST keep a hierarchy managed ;) If you need any of your additions to have a configurable parameters - no problem! Just put the variables in your global config file.