new funcion: util::inline_svg_from_dot: refactored version from private api-procs function. use new function in api-doc CVS: ----------------------------------------------------------------------
ad_schedule_proc: change default of optional parameter "-thread" to "t" to reduce likelyhood that main sched thread is blocked to long. While the main sched thread is blocked, no other jobs will be scheduled. This can lead to potential problems, when scheduled procs should be executed at certain times.