If a report is loaded with default settings and the 'Reset button' is
pressed the 'OK/Apply' buttons will be enabled which should not happen
as there are no changes to be made.
Fixed by resetting the changed flag on options load and then comparing
the current value to the default one when the 'Reset button' pressed.
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.
