Added fix for configuration file causing exception when importing astropy from source.
Added fix for configuration file causing exception when importing astropy from source.

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