debugging statements added to convolve_fft and a lot of little bug fixes
debugging statements added to convolve_fft and a lot of little bug fixes

tbabej/astropy,larrybradley/astropy,lpsinger/astropy,funbaker/astropy,MSeifert04/astropy,MSeifert04/astropy,tbabej/astropy,pllim/astropy,pllim/astropy,pllim/astropy,aleksandr-bakanov/astropy,aleksandr-bakanov/astropy,kelle/astropy,saimn/astropy,mhvk/astropy,DougBurke/astropy,bsipocz/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,funbaker/astropy,StuartLittlefair/astropy,kelle/astropy,MSeifert04/astropy,tbabej/astropy,lpsinger/astropy,mhvk/astropy,joergdietrich/astropy,saimn/astropy,astropy/astropy,saimn/astropy,lpsinger/astropy,dhomeier/astropy,bsipocz/astropy,saimn/astropy,DougBurke/astropy,funbaker/astropy,bsipocz/astropy,DougBurke/astropy,larrybradley/astropy,astropy/astropy,mhvk/astropy,joergdietrich/astropy,larrybradley/astropy,kelle/astropy,lpsinger/astropy,mhvk/astropy,AustereCuriosity/astropy,tbabej/astropy,joergdietrich/astropy,joergdietrich/astropy,joergdietrich/astropy,tbabej/astropy,astropy/astropy,astropy/astropy,MSeifert04/astropy,dhomeier/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,stargaser/astropy,StuartLittlefair/astropy,funbaker/astropy,AustereCuriosity/astropy,mhvk/astropy,stargaser/astropy,larrybradley/astropy,AustereCuriosity/astropy,AustereCuriosity/astropy,dhomeier/astropy,astropy/astropy,saimn/astropy,dhomeier/astropy,pllim/astropy,bsipocz/astropy,larrybradley/astropy,StuartLittlefair/astropy,kelle/astropy,dhomeier/astropy,pllim/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,DougBurke/astropy,kelle/astropy,stargaser/astropy,stargaser/astropy