This is the place for build-time trinkets, like Ano script, menu resource file
and widget resource file compilers. Those compilers can be used directly from
command line, for example:

 $ ./build/ano    examples/gui_vesmir/gui_vesmir.ano > engine/dsl_ano.h
 $ ./build/menu   examples/gui_vesmir/gui_vesmir.m2c > engine/menu_defs.h
 $ ./build/widget examples/gui_vesmir/gui_vesmir.w2c > engine/widget_defs.h

Data file downloader, pkget.sh script, supports several programs to get the
data file, for example:

 $ ./build/pkget.sh fetch
 $ ./build/pkget.sh wget
 $ ./build/pkget.sh curl
 $ ./build/pkget.sh lynx
 $ ./build/pkget.sh links
 $ ./build/pkget.sh elinks

If no command line parameter is given, it tries to use programs listed above,
in that order.

All other files in this directory are for internal use.