- removed "scripts" method of executing external programs after uping

- removed "scripts" method of executing external programs after uping
  or downing device (almost nobody didn't know about it 8-)
- added new method which is using run_up() and run_down() functions
  defined in device configuration file (ifcfg*)
- fixed problem with displaing garbage instead of formated output
- removed execution of random start (this should be started in standard
  init.d way)
- set ld.so.cache if doesn't exist, too
- use new (rh) style for date variables

svn-id: @697