Add news about deprecated complex ops.
Original patches were:
python/dist/src/Misc/NEWS:1.387
great many cyclic structures involving frames. Reported on
SourceForge as bug 543148.
+- Complex numbers supported divmod() and the // and % operators, but
+ these make no sense. Since this was documented, they're being
+ deprecated now.
+
- String methods lstrip(), rstrip() and strip() now take an optional
argument that specifies the characters to strip. For example,
"Foo!!!?!?!?".rstrip("?!") -> "Foo". In addition, "200L".strip("L")