add inputsource to DELA021.xml Dell 2007FP, S-Video Composite options.xml.in

Dell 2007FP supports the inputsource control, adding it along with some
detailed notes as to the variations from model to model between three
different displays.  I'm leaving it with the newest models settings.

Add S-Video and Composite to inputsource in options.xml.in to match
the options added here.
generating options.xml

Updating options.xml so the database can be used in place without
compiling or installing.   That is what I did before I knew it was
out of date and needed to be updated, I expect others who just want
the latest database to do the same.