Supporting QoS in C++ layer:

Supporting QoS in C++ layer:
1) Modified the QoS enums so they are not transport specific
2) Overleaded member functions in Platform and Resource to allow specifying QoS
3) Modified internal function hierarchy to pass QoS to C layer
4) Added examples for C++: simpleclientHQ and simpleserverHQ to demo the usage of QoS
5) Modified examples to use the new QoS enums
6) Minor mods in the C layer
7) Minfor fix for OCICUC tests
8) Minfor fix for arduino sample
9) Fixes for received reviews
10)Rebase on to master
11)OCICUC : Platform bare pointer to reference

Change-Id: I5789935e16c851e7d47921a9acdfb15a363daa8e