Eclipse: Added Trunk Support For CorsixTH Eclipse Configurations

#342 
![Luna Workspace Configuration Screenshot](https://www.mediafire.com/convkey/0a7a/98gjej8d72ecfqw6g.jpg)
***In screenshot: the detected problems are not listed in the problems view because I've set it to only list problems for selected files/folders. This setting can't be included in the uploaded project configuration but instructions for using it are included in the setup readme file.***

I've created an Eclipse directory in the root CorsixTH directory which contains a folder for an Eclipse Luna workspace configuration containing a CorsixTH project.

The workspace and project have paths relative to the CorsixTH root directory, so they are ready to be used.

I've included a workspace configuration despite there only being one project because the benefit of giving this project is own CorisxTH workspace is that you can leave the files your working on open in the text editor view and then switch to another workspace to work with its projects files. Then you can just switch back to have all your CorsixTH files ready for you to continue using in the text editor view.

When this project is first opened a setup readme file will be displayed in the text editor view, telling users that they will need to install the Lua Development Tools plugin and a C++ development tools plugin.