shuffled "isExecutable" to the end. The new order favors the common use
cases. Adjusted all Addon invocations and while at it also removed
separate LinkAgainst invocations.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20604 a95241bf-73f2-0310-859d-f6bbb57e9c96