Complete ossieComponent class

[balister]

ossieComponent tries to hide the component startup and shutdown code from the component writer. It is not complete.

• Try to move as much code as possible into the class.
• Create class hierarchy to support resources, devices, and (possibly) resource factory based components.

This work should also resolve ticket #34.

[balister]

I wrote a template class that may be used to replace the code we have been using in the component main.cpp code. The template is in r6159 , the file is ossieResource.h. I botched the checkin message.

I updated the ossie demo components to use this template in r6160, r6161, and r6162,

I also refactored Resource_impl to use pure virtual functions for components, rather than supply empty methods. This should make it clearer what methods the component writer is responsible for. There is the added benefit of not running so many constructors when you create a resource.

If there are no comments, I will close this ticket in a few days.

[balister]

Closing as there have been no further comments.