Merged revisions 142354 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r142354 | russell | 2008-09-10 11:39:53 -0500 (Wed, 10 Sep 2008) | 7 lines

It is a normal situation that a task gets put in the scheduler that should run
as soon as possible.  Accept "0" as an acceptable time to run, and also treat
negative as "run now", and don't print a debug message about it.

(inspired by a message asking about the "request to schedule in the past"
 debug message on the -dev list)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@142355 65c4cc65-6c06-0410-ace0-fbb531ad65f3