Add SWIG4 support for SWIG Python binding on Windows. * build/generator/gen_win_dependencies.py (GenDependenciesBase._find_python): Fix differences of SWIG_PY_OPTS between Unix and Windows. (Just same logic as function SVN_FIND_SWIG in build/ac-macros/swig.m4) Patch by: Jun Omae <jun66j5{_AT_}gmail.com>
subversion/trunk/build/generator/gen_win_dependencies.py