Make it possible to run fmu and px4io simultaneously with full control over both sets of possible PWM outputs.  First started wins.

Switch to the standard 'verbose' build option. Use a better way of passing options to the linker that is closer to friendly with 'make export'.

Switch from -Os to -O3.  This generates *much* faster code, although at a ~50% size penalty.  We can afford the space.

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Conflicts:
	apps/commander/state_machine_helper.c
	apps/multirotor_att_control/multirotor_att_control_main.c
	apps/multirotor_att_control/multirotor_rate_control.c
solved

Split the parameter load/save commands out of the 'eeprom' command, since that's not really the obvious place for them.  Add parameter printing functionality (though, it's a mess due to %f being busted)

Update the script examples to use the new command.

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Add a 'secret' subcommand to bl_update that manipulates the option bits to change the brown-out detector configuration.

This is an experiment to see if we can improve the boot-time behavior when powered off noisy supplies.

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