lmi.test.unittest is now defined directly in lmi/test/__init__.py

When comparing instance names, treat unicode and str objects the same.
Byte strings are supposed to use utf-8 encoding. Therefor unicode
strings need to be encoded before comparison.

Updated copyright years to include new year 2014.

Some tests expect that exceptions won't be thrown out of LMIShell's
functions. Others prefers them and enable them globally. This causes
problems when running under nosetests all provider tests at once.
Tests that modified enablement of exception throws globally caused
others to fail.

This patch makes sure that each TestCase has defined use of exceptions.
Default state is to have them disabled. If a TestCase prefers having
them enabled, just one variable needs to be overriden in its body:

    class AccountBase(lmibase.LmiTestCase):
        USE_EXCEPTIONS = True

Historically indication tests have been using pywbem machinery, which
is now obsolete as lmishell gained proper indication support recently.