Fix build script for systems without VS2012
Fix build script for systems without VS2012

wangdoubleyan/LightBlue,graemefoster/LightBlue,Drewan/LightBlue,wangdoubleyan/LightBlue,ColinScott/LightBlue,Drewan/LightBlue,graemefoster/LightBlue,wangdoubleyan/LightBlue,ColinScott/LightBlue,ColinScott/LightBlue,LightBlueProject/LightBlue,Drewan/LightBlue,graemefoster/LightBlue,LightBlueProject/LightBlue,LightBlueProject/LightBlue