Running unittests: NOSE_VERBOSE environment var now enabled verbose output from Nose.

tests/settings.py

@@ -35,6 +35,7 @@ COVERAGE_EXCLUDE_MODULES = ("celery.__init__",
 )
 
 NOSE_ARGS = [os.path.join(here, os.pardir, "celery", "tests"),
+            os.environ.get("NOSE_VERBOSE") and "--verbose" or "",
             "--cover3-package=celery",
             "--cover3-branch",
             "--cover3-exclude=%s" % ",".join(COVERAGE_EXCLUDE_MODULES)]