[MISC] Rework build process

For Linux, BSD, Toasters and OSX, rework the build process to use more features from autotools.

• Build an AppImahe
• Understand why all .m4 files are not in the M4 folder
• Understand why files for the configure don't go in their own folder
• Understand why the autorecongf doesn't create the config.sub and config.guess files
• Place headers in some other directories of their own (or the garbage config folder) <- don't want to debug the build process...
• Use Makefile.am <- Because of OSX