Remove wild import from common and user full paths instead

[ruuk]

Would it be OK with you if we started doing this?

Reasons:

• Wild imports pollute the namespace (ex. I could accidentally define a method that replaces one imported from common)

from lib.common import *

# Now logging is broken, and it's not obvious unless you know that log is in common
def log(msg):
    pass

• It's easier to know where the method came from (especially helpful with more than one author)

from lib import common

common.log("This method is from common")

from lib.common import *
from example import *

log("Where did I get this method")

• My editor can't warn me if I incorrectly spell a method name, because anything I type could be in the wild import

from lib.common import *
flyingMonkeys("My editor has no problem with flyingMonkeys, it assumes it was imported from lib.common")

from lib import common
flyingMonkeys("My editor warns me that flyingMonkeys is not defined")

[elbowz]

For me it's good!

Only for justify me, I have taken inspiration from official XBMC version check add-on: https://github.com/XBMC-Addons/service.xbmc.versioncheck/blob/master/service.py

p.s. thanks for the long explanation. It's really appreciated :)