Added missing __ne__ method to some data types

Ignore-this: 7dcfaa3f360702136de069c681bba3ef

darcs-hash:20101012014611-b22ec-6c7fc405e02a9e032e2f95647661e5d40b3a4e5e
Avoind unnecessary conversion to unicode in PortRange conversion

Ignore-this: eb1a3d22cd912ec36dad6cc2c9f4f353

darcs-hash:20101012014742-b22ec-28f0687f28961f5b4abe741c0d7535b15c0b606d