switch/default -- enum, want compiler error

[Hal Murray]

[Context is -Wswitch-enum]
> Neat.  That found some stuff in gpsd that will take some  time  to fix.

The plot thickens.

It turns out that -Wswitch-enum was already in wscript.  It gets added if 
you config with --enable-warnings

There is a table of options to try.  One might expect that it would add 
the ones that worked.  I did.  But it doesn't work that way.  There is a 
bunch of code below that does
  If the flag we set when it worked, then add it to CFLAGS.
So when I added -Wswitch-enum to the table, that didn't actually add it to 
CFLAGS, but it was already getting added to CFLAGS so I got confused while 
testing my changes.

I tried adding things to CFLAGS if the check worked.  That broke the 
checking stuff.  I think we should be able to fix the tiny code chunks so 
they are good clean code, but I didn't go down that rathole.

I found one slot in the table that didn't have the test/add below.

We should be able to turn that chunk of code into a loop.

If I have the text form of a variable name, how to I turn that info a name 
for the python compiler?  That is if I have:
  foo = "mumble"
how do I do?
  if xx.mumble:  ...




-- 
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