gmoccapy_1_0_8 - on/off switch check state before activating it

should not switch on the machine, if it has been stoped because
hidding a limit switch
Merge branch 'master' of ssh://norbert@git.linuxcnc.org/git/linuxcnc.git
gmoccapy_1_0_9 - solved ignore limits bug

ver. 1.0.9
- the ignore limits has not been called, due to a missing signal from the
  glade file, also the checkbox was hidden if machine off, so it could
  not be activated after hitting a limit switch.
hal_widgets:  HALIO_HSscale widget

pin changes have preference over UI-driven changes, which is needed
to retrieve the default from HAL.

goal: provide a means to connect to HAL_IO pins which act as parameters.