Changes in C++ for vendor specific header options to be sent from client to server...

Changes in C++ for vendor specific header options to be sent from client to server and vice-versa
Patch 2:
Code clean up
Fixes for sending header options from client to server
Patch 3:
Added additional comments;
Addressed review comments, added more comments.
Added implementation for sending header options from server to client.
Updated related sample files.
Added comments
Rebased with master
Completed additional changes for building.
Patch 4:
Removed unnecessary statements in makefile.

Change-Id: Ie984051615632263a0f653dc5a1347f8b50dae10