This switches swig to use python 3 specific features when generating the
bindings, switches the build over to python 3 and makes the neccesary
python 2 to 3 conversions in the bindings and tests.
Where possible in the Python SWIG code use the builtin SWIG conversion
code over custom code. This ensures appropriate overflow/type checking.
With this I have enabled GncNumeric from longs and tested for correct
overflow handling.
Note: This could be extended to GUILE but I am not familiar enought to
safely enable this.
At current the Python GncNumeric has issues with type conversion eg.
* GncNumeric(1.3) = 1.00
* GncNumeric("1.3") is OK but any future methods error
This behaviour was relied on for the Account tests to pass as it used
GncNumeric(0.5) == GncNumeric(1.0) but this is not what many users would
expect.
This fix alows GncNumeric to be constructed from a (int, int)
numerator/denominator pair or int/float/str where double_to_gnc_numeric
and string_to_gnc_numeric from C is used.
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.
