Fix compilation with C++11 and above

[flannelhead]

There were several problems in the C++11 and above specific code that prevented compilation with gcc >= 6.1 where C++14 is used as the default standard instead of C++98 (previous gcc versions).

In ExPolygon.cpp and Surface.hpp there are trivial fixes to typos in the C++11 specific code.

In PolylineCollection there was an ambiguity between overloaded functions with Polylines &&src and Polylines src arguments. In such a situation the compiler can't resolve between those two functions.

My attempt at a solution is to make a new private _chained_path_from functions which allows explicitly specifying whether the Polyline objects from the const Polylines &src vector can be moved. In the public interface, there are overloads of chained_path and chained_path_from functions with const lvalue reference (const Polylines &src) and rvalue reference (Polylines &&src) parameters. These call _chained_path_from respectively asking either to move or not to move from src. A user of the PolylineCollection can trigger the move variant by passing an rvalue reference (using std::move).

This solution might need some reviewing as I'm still not entirely comfortable with move semantics. In particular, I'm not sure if there could be some other way to trigger the std::move in _chained_path_from without specifying it explicitly (i.e. based on whether the input value is const Polylines & or Polylines &&). Of course one could just do two overloaded variants of chained_path_from, but there would be a difference of only one line and that sounds like unnecessary duplication.

[flannelhead]

While I was at it, I also fixed auto_ptr deprecation warnings.

[bubnikv]

Thanks, I am looking into it.
Interestingly, the move semantics in my original form compiles on the Visual Studio 2013.

[bubnikv]

great, thanks

[flannelhead]

@bubnikv good.

Strange indeed that it compiled on VS2013. The compiler there might have different logic for overload resolution. If you happen to figure out a better way to resolve this ambiguity, please enlighten me too :)