This is like gettask_id but doesn't require translation of fnid -> fn
first which the function then translates back. This gives a sizeable
performance improvement since a significant number of lookups are avoided.
(Bitbake rev: 3190cb83e2af195a464f669c5aa8aedbf795160e)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>