update the new ConVEX project eclipse plugin

The new project plugin now links against V2.6.2 rather then V2.6.0.  The old version is kept for those who wish to remain on V2.6.0

Signed-off-by: James Pearman <jbpearman@mac.com>
Add ChibiOS V2.6.2 to project

Signed-off-by: James Pearman <jbpearman@mac.com>
Update all demo projects to use ChibiOS V2.6.2

Signed-off-by: James Pearman <jbpearman@mac.com>