gmoccapy_0_9_9_8_1 - jog_increments handling changed

ver. 0.9.9.8.1
- self.data.jog_increments now is self.jog_increments
  changed the increments handling a little bit
  so there is no need any more for self.no_increments
- changed code from self.gscreen.halcomp to self.halcomp, because it is the same ;-)
- prepared to be able to get an gmoccapy hal component
gscreen - initialize_manual_tool_change

initialize_manual_tool_change may now be overwritten by custom
handler files