CHOP-960: Validate cmd_line.xml for map-to real settings.xml vars. A small, fixed set of cmd_line.xml switches can't reasonably be mapped to settings variables, mostly because they affect the settings machinery itself. Other than those, every new cmd_line.xml switch should map-to a settings variable. Validate that only the known set does not have map-to; validate that map-to variable actually exists.
CHOP-960: Validate cmd_line.xml for map-to real settings.xml vars.
A small, fixed set of cmd_line.xml switches can't reasonably be mapped to
settings variables, mostly because they affect the settings machinery itself.
Other than those, every new cmd_line.xml switch should map-to a settings
variable. Validate that only the known set does not have map-to; validate that
map-to variable actually exists.

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm