* in P3, the iterator stepping method has become a dunder method (next
-> __next__), the protocol has not changed, add a __next__ alias to
the iterator-next definition (nota: ir.config also has a next method
but it's not part of an iterator, so don't alias it and don't
convert calls to it)
* since ~2.6, a builtin (next()) has been added to step an iterator &
allow for a default (in case of iterator end), convert all manual
stepping to the builtin
Fixers:
libfuturize.fixes.fix_next_call
#8530
xmo-odoo