Check_MK Werk 2581: Fix crashing Nagios core in rare case when excessive commands are being executed

ID: 2581 Title: Fix crashing Nagios core in rare case when excessive commands are being executed Component: Livestatus Level: 2 Class: Bug Fix Version: 1.2.7i3 The crash was due to the fact that the internal Nagios API for executing commands is not thread safe. The CMC was not affected. This fixes the problems: http://tracker.nagios.org/view.php?id=656 http://lists.mathias-kettner.de/pipermail/checkmk-en/2015-February/014497.h… Thanks to Ryan C. Underwood for the patch!