Splitting kdesk in 2 packages to deploy the hourglass library

 * The hourglass library is built and packaged separately
   along with include file and C++ / Python samples
 * Added a C++ sample that illustrates how to build lib shared clients
 * Improved library robustness with a cleanup destructor
Fixed paths to install libkdesk components

 * /.../local is meant for administrative files, not system,
   debuild does not like them.
Adding Python interface

 * Added pythonmodule to access the hourglass APIs
 * Added a sample python client to illustrate usage
 * Added python dependency to kdesk-dev
Fix hourglass support to pure C clients. Fixed minor typos
Merge pull request #77 from KanoComputing/dev-package

Splitting kdesk in 2 packages to deploy the hourglass library