Export fixes for windows. Refs #1088.
Export fixes for windows. Refs #1088.

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