Make mask attribute work for masked=False tables
Make mask attribute work for masked=False tables

dhomeier/astropy,saimn/astropy,bsipocz/astropy,MSeifert04/astropy,mhvk/astropy,MSeifert04/astropy,pllim/astropy,lpsinger/astropy,stargaser/astropy,saimn/astropy,saimn/astropy,mhvk/astropy,lpsinger/astropy,saimn/astropy,astropy/astropy,saimn/astropy,dhomeier/astropy,StuartLittlefair/astropy,MSeifert04/astropy,StuartLittlefair/astropy,lpsinger/astropy,lpsinger/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,mhvk/astropy,pllim/astropy,astropy/astropy,dhomeier/astropy,mhvk/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,larrybradley/astropy,stargaser/astropy,pllim/astropy,larrybradley/astropy,stargaser/astropy,larrybradley/astropy,astropy/astropy,lpsinger/astropy,MSeifert04/astropy,dhomeier/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,aleksandr-bakanov/astropy,pllim/astropy,stargaser/astropy,larrybradley/astropy,pllim/astropy,StuartLittlefair/astropy,mhvk/astropy,astropy/astropy,bsipocz/astropy,astropy/astropy,bsipocz/astropy