Python3 fixes for gtkdoc-depscan
Fix the following python3 errors reported when running gtkdoc-depscan
- NameError: name 'reduce' is not defined
- AttributeError: 'map' object has no attribute 'sort'
- TypeError: unsupported operand type(s) for >>: 'builtin_function_or_method' and '_io.TextIOWrapper'. Did you mean "print(, file=<output_stream>)"?
- TypeError: 'map' object is not reversible
- AttributeError: 'dict_items' object has no attribute 'sort'
Edited by Emmanuele Bassi