with the function/declaration that they substituted.
Note that this doesn't use the recommended new GObject creation macros
because the class names in libgnucash/engine don't follow the gnome
naming convention.
It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)
This is the first step in restructuring the code. It will need much
more fine tuning later on.