StringPtr

Small single-threaded library for automatic string freeing. Used one-bit counters and "smart" pointers

Global values:

• empty_string
• null_object

Operations set:

• creating a new pointer initialized by default, string and other pointer
• assignment to pointer other pointer or string
• extracting a string from smart pointer
• printing a smartpointer include counter and value
• string release trace in debug mode, to enable add -D DEBUG in compilation command at Makefile

Test set

• various initialisation methods
• assignment
• simple sorting array of string which represented as smart pointers (don't change ptr counting)