Core kernel code changes:

Core kernel code changes:
+ Added xTaskAbortDelay() function, which causes a task to exit the Blocked state even before the timeout has expired or the event the task is waiting for has occurred.
+ For efficiency and code size reasons on some architectures, replace many instances of "== pdTRUE" with "!= pdFALSE".

git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@2416 1d2547de-c912-0410-9cb9-b8ca96c0e9e2