Fix tests

[malloxpb]

Fix all the components that might fail the tests:

• Decode the result of urljoin, urlsplit based on the type of input
• add performance test to check the performance of urlparse4 after each change
• update the test from urllib to the current version from cpython libraries

[malloxpb]

After testing out the performance of urlparse4 with different option: here is some result :)

	urlsplit	urljoin
default	0.20	0.23
Unicode supported	0.20	0.20
Result based on input	0.17	0.21