PROFILES: Save/Load axis limits of the plot.
PROFILES: Make sure to save all data to .ini file, when closing application, before widgets get destroyed.
INI Processing: When there is a "." in the token, don't just
	assume it's only for iio devices, try an iio path, if it
	fails, fall back to the plugin handler.

Signed-off-by: Robin Getz <robin.getz@analog.com>
PROFILES: Add the ability to load profiles with '-p' to help 	facilitate testing of boards with specific profiles. 	(do things in a more scripted way, with no GUI).