linuxcnc script: support starting applications

Specify with:
   [APPLICATIONS] DELAY = value_in_seconds
   [APPLICATIONS] APP = application name

Also: Update ini_hal_demo.ini example to simplify and
      illustrate starting of an application

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
xhc-hb04: use [APPLICATIONS]APP= for monitor app

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
gladevcp/probe.ini: use [APPLICATION]APP=

Also:
  simplify to use simpler bash script probe_gui.sh
  remove button for probe contact since it was unusable (greyed out) when running

there are still problems with bogus duplicate o-word, limits, etc

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
simulate_probe: use package require Hal

instead of exec halcmd

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
gladevcp/set-param-from-ini use [APPLICATIONS]APP=

simplify to use set-param-from-ini.sh

also:
   use environemntal var INI_FILE_NAME since EXAMPLE_CFG was not defined
   within the example

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
sim/touchy/ngcgui: ini files use [APPLICATION]APP=

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
linuxcnc script: support arguments passed to APP

and improve search method for finding application

update pyngcgui_touchy examples to illustrate arguments

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
lathe-fanucy: conform for pickconfig

test in deb
Signed-off-by: Dewey Garrett <dgarrett@panix.com>