hal_glib -add reload-display signal

now you can cause the HAL_gremlin to reload.
for instance after a offset change
gladevcp -have HAL_gremlin respond to reload-display signal

reload the last loaded program to update such things as offset changes
gladevcp -have offsetpage widget ask the screen to reload

so the display reflects the actual position
gladevcp -adjust the requested height of the oval LED

It wasted vertical space
gscreen -add angular jogging rates, dialog spindle controls

default gscreen can display more axes now (any 6)
machines with rotary joints can have separate jog rates for them
manual spindle controls are in a pop up dialog to save more space
add a verbose debugging switch -v this shows most of the try-exception-pass
cases that hide errors.
update the sample configs to utilize new functions