lrunzip when Fuel Master doesn't have enough RAM

This enhances the information about running lrunzip on another
system if the Fuel Master does not have enough RAM for it.  This
comment was received for 5.1.1 but also applies here.

Change-Id: Ic8a17cbf251ef202d4a52d03d11c9d8b50d574fb
Merge "lrunzip when Fuel Master doesn't have enough RAM" into stable/5.1