Win32 VS support

I've started commiting the modifications to make the libimobiledevice library compile on Win32 using Visual Studio
There are some grey areas, that I'm not sure, going to work, just let me know how to do these better

For example:
src/Dictionary.cpp modification, I think it's just as goog as the orignial, but I'm don't usually use std libraries
without it the compiler output is like this:
libplist\src\dictionary.cpp(155): error C2440: '<function-style-cast>' : cannot convert from 'int' to 'PList::Dictionary::iterator'
No constructor could take the source type, or constructor overload resolution was ambiguous

Another issue, is that I'm not sure, where to commit the dependent libraries, and without them the project will not compile. Right now I keep my solution file and the external libraries in a separate repository, and link libplist in it, but I'm not sure how to properly share these.