new in C++11 playground:
- minimal correct example of own memory management with class mystring (including default and copy constructor, destructor, move constructor, move and copy asignment)
- testing mystring against std::string ... std::string uses less allocs due to copy on write
- => c++ strings are not thread safe. small testcase
use tabs instead of spaces in stat.awk ... to get even better aligned output: use align_as_table tool from little_helpers directory