re-org
rm cx_stdio.cpp - deprecated
working on 'this' pointer
'this' pointer
working on 'this' pointer in extended type namespace
this pointer in type namespace complete

example extending a data type:

``` cpp
namespace bool {
bool is_false(){
return (this == false);
}
}
```
Merge pull request #69 from ahebert/master

merging work on namespace and 'this' pointer