Releases for Ubercart eWay Payment Gateway

Fixed bug when sending country code for beagle request.

A significant set of changes as per #482704: Updates, upgrades and changes
- Updates to bring the module more in line with the drupal.org coding standards
- Changing function names to reduce the possibility of naming conflicts with other modules
- Changing variable names from the settings page to reduce the possibility of naming conflicts with other modules
- hook_update_N function in uc_eway.install to help migration from old variable format to new variable format
- Added a 'Powered by eWAY' block to the list of available blocks and put some options under the block config to allow the user to choose the colour and size of the image. These options have been taken from this page: http://www.eway.com.au/Developer/Downloads/eWAYSiteSeal.aspx
- Added all four images from the above page to the module under uc_eway/images to facilitate the choice outlined above
- Added the Beagle Anti-Fraud eWAY method to the list of available eWAY modes
- Removed the ewayLarge.jpg from the module

Updates include adding of eWay logo, adding of instructions to add eWay logo to credit card form. Add uninstall so details are cleared on uninstall. Also added a fix from Wayne Doyle as mentioned on the Ubercart.org site.