[PATCH 5/6] configure: allow picking up dwarf version for compilation from command line

[Eric Pouech]

> How about an easier solution: we could skip appending -gdwarf-2 if any 
> of -gdwarf-[234] options are provided in CFLAGS.
>
yeah, way simpler ; may even work ;-)

two questions though:

- is there a need to support CROSSDEBUG=dwarf ? or not specifying 
anything in CROSSDEBUG is fine

- when using CROSSDEBUG=pdb, I assume there's no need to the -gdwarf* 
options at the same time?

A+