Fixes tests
Bumps version to 2.5.15
Fixed typo 2014 -> 2013
Wording
Wording
Fixed wrong dates in Changelog
Merge branch '2.5'

Conflicts:
	Changelog
	README.rst
	kombu/__init__.py
Fixes problems with time vs monotonic
Fallback time.monotonic implementation using ctypes for Linux/OS X
flakes
Fixes circular import
Cosmetics