Add mingw32 target iconv required for compiling SDL2
Add mingw32 target iconv required for compiling SDL2

peteruhnak/pharo-vm,peteruhnak/pharo-vm,timfel/squeakvm,timfel/squeakvm,OpenSmalltalk/vm,OpenSmalltalk/vm,timfel/squeakvm,OpenSmalltalk/vm,peteruhnak/pharo-vm,timfel/squeakvm,timfel/squeakvm,OpenSmalltalk/vm,timfel/squeakvm,peteruhnak/pharo-vm,peteruhnak/pharo-vm,timfel/squeakvm,peteruhnak/pharo-vm,peteruhnak/pharo-vm,OpenSmalltalk/vm,OpenSmalltalk/vm,peteruhnak/pharo-vm,OpenSmalltalk/vm,OpenSmalltalk/vm,timfel/squeakvm