Minor tidy ups that don't effect code generation, plus:

Minor tidy ups that don't effect code generation, plus:
When a task is unblocked the need for a context switch is only signalled if the unblocked task has a priority higher than the currently running task, instead of higher than or equal to the priority of the currently running task.

git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@2163 1d2547de-c912-0410-9cb9-b8ca96c0e9e2