Optimized Posix API Usage Example Code: CPP

STABLE_2.0

added version number to Makefile

Posix API Usage Example Code: CPP

First Stable version of example code for Posix API usage.

1. posixThreadExample -- Example of dynamic thread creation using posix API
2. posixSemaExample -- Example of Semaphore usage between two threads
3. posixMqueueExample -- Example of Message Queue implementation between two threads