Sets a value for LD_LIBRARY_PATH in child processes:
Note that the variables LD_LIBRARY_PATH is special. This
library path is needed to run processes as children of cfengine.
Often, if the agent is started from cron (which is started by init),
there is no suitable library path set, and shellcommands will
fail with strange errors about not being able to load shared
objects. Setting a library path here is a useful way of
correcting this problem.
childlibpath = ( /usr/local/lib:/local/mysql/lib )