Clean up bootloader project ASF integration code.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2685 d5102386-fcda-11dd-9fdb-3debd5008f28
Update VSIX package generator; allow all newer test builds to be installed over the top of each other without first uninstalling the existing one, but allow all releases to supersede test builds.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2686 d5102386-fcda-11dd-9fdb-3debd5008f28
Added new CONCAT() and CONCAT_EXPANDED() convenience macros.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2687 d5102386-fcda-11dd-9fdb-3debd5008f28
Tweak the VSIX output names to indicate if it is a release or testing version.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2688 d5102386-fcda-11dd-9fdb-3debd5008f28
Clean repository before packaging into VSIX extensions.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2689 d5102386-fcda-11dd-9fdb-3debd5008f28
Update AS integration scripts and transforms - extract out the module description from the Doxygen XML output for the GUI.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2690 d5102386-fcda-11dd-9fdb-3debd5008f28
Fix typos in the Arduino Leonardo board drivers.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2691 d5102386-fcda-11dd-9fdb-3debd5008f28
Add module help links and descriptions for boards inside Atmel Studio.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2692 d5102386-fcda-11dd-9fdb-3debd5008f28
Improve bootloader compile error message text when building without the correct optimization level.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@2693 d5102386-fcda-11dd-9fdb-3debd5008f28