Reverse dependencies for memoize

Latest version of the following gems require memoize

Gem	Version	Date	Downloads
logirel +49.3 Thousand Downloads	`0.1.6` August 12, 2011	August 12, 2011	49.3 Thousand
filament +39.8 Thousand Downloads	`0.4.0` May 04, 2006	May 04, 2006	39.8 Thousand
myshows +20.3 Thousand Downloads	`0.2.2` January 30, 2011	January 30, 2011	20.3 Thousand
SUPPORT +2.83 Thousand Downloads	`0.0.1pre` March 11, 2013	March 11, 2013	2.83 Thousand