[saga-gis-developer] SWIG python preprocessor define

[Volker W. <wic...@la...>]

Johan, all,

at the moment the fix to make the python interface compile under linux 
unicode is like the following (saga_api.h, line 66):

#ifdef _SAGA_UNICODE
%include <typemaps.i>
%include <python/cwstring.i>
#endif

This breaks the possibility to compile other interfaces with SWIG, e.g. 
the Java interface. We have to agree on a special python preprocessor 
define, something like

#if defined(_SAGA_SWIG_PYTHON) && defined(_SAGA_UNICODE)
%include <typemaps.i>
%include <python/cwstring.i>
#endif

This change will make it necessary to update the SWIG call of the python 
interface builder as well.

What do you think?
Volker