[uracoli-devel] rewrite of the build system

[Axel]

Hello all,

in a few minutes I'll push a commit to the repo, which rewrites the 
scons build system.

The usage is the same like the old build system, but it is now more
concentrated.

It consists of the following files:

 - ./SConstruct
 - ./SConscript_general
 - ./SConscript_board

and the following config files

 - Config/applications.cfg  --- application definitions
 - Config/board.cfg ----------- board configurations
 - Config/docs.cfg ------------ doxygen configurations
 - Config/examples.cfg -------- example app configuration
 - Config/packages.cfg -------- package definitions
 - Config/toolchains.cfg ------ toolchain setup.

The config files are read from SConstruct, while SConscript_board
defines the compiling of the libraries and applications. All other
build targets (doc, psrc, ... ) are defined in SConscript_general

The main reason for the rewrite was a central handling of the
compiler and build flag configuration.

Best Reagrds, Axel.