Removed C++11-functionalities to enable compilation on GCC 4.4.

- Lambda functions converted to struct-functors/normal functions.
- unique_ptr to plain pointer as memory-header didn't compile with -fno-
rtti.
- Range based for replaced with iterators.
Bumped version to 0.1.3
Merge branch 'master' of https://github.com/ndob/duktape-node