Merged revisions 134480 via svnmerge from

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

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r134480 | tilghman | 2008-07-30 14:03:44 -0500 (Wed, 30 Jul 2008) | 5 lines

launch_netscript sometimes returns -1, which fails to set AGISTATUS.  Map
failure to -1, so that AGISTATUS is always set.
(closes issue #13199)
 Reported by: smw1218

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@134481 65c4cc65-6c06-0410-ace0-fbb531ad65f3