various installer fixups
various installer fixups

fxtentacle/tilemill,MappingKat/tilemill,MappingKat/tilemill,fxtentacle/tilemill,nyimbi/tilemill,tizzybec/tilemill,tilemill-project/tilemill,florianf/tileoven,paulovieira/tilemill-clima,tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,mbrukman/tilemill,nyimbi/tilemill,paulovieira/tilemill-clima,Teino1978-Corp/Teino1978-Corp-tilemill,fxtentacle/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,Zhao-Qi/tilemill,florianf/tileoven,MappingKat/tilemill,MappingKat/tilemill,tilemill-project/tilemill,florianf/tileoven,mbrukman/tilemill,nyimbi/tilemill,tizzybec/tilemill,paulovieira/tilemill-clima,paulovieira/tilemill-clima,tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,nyimbi/tilemill,fxtentacle/tilemill,tizzybec/tilemill,tilemill-project/tilemill,paulovieira/tilemill-clima,Zhao-Qi/tilemill,mbrukman/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,nyimbi/tilemill,mbrukman/tilemill,fxtentacle/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,Zhao-Qi/tilemill,Zhao-Qi/tilemill,mbrukman/tilemill