added more transform tricks to make old system names work
added more transform tricks to make old system names work

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