Bump version again due to a problem in releasing 3.1.26.

celery/__init__.py

@@ -19,7 +19,7 @@ version_info_t = namedtuple(
 )
 
 SERIES = 'Cipater'
-VERSION = version_info_t(3, 1, 26, '', '')
+VERSION = version_info_t(3, 1, 26, '_1', '')
 __version__ = '{0.major}.{0.minor}.{0.micro}{0.releaselevel}'.format(VERSION)
 __author__ = 'Ask Solem'
 __contact__ = 'ask@celeryproject.org'