adding 'g++-v3/cshadow' to cpp search path...

[brent verner <brent at rcfile dot org>]

Greetings,

I didn't have time to dig more into sorting out the real cshadow
problem, so I decided I could at least be productive by hacking the 
gcc build to have cpp search 'g++-v3/cshadow' for includes first.

I'm setting this up so the shadow directory, tentatively named
cshadow, will contain _all_ shadowed headers (from shadow and cshadow 
from the current libstdc++-v3 build) and live within the current
installed g++-v3 include directory. It should be very simple to 
change the name from cshadow, however.

( random thought: wouldn't it be nice if there was a cpp-specs
  file that this sort of thing could be _easily_ managed from? )

If any of this approach is objectionable, let me know before I
go much further.

I intend to have this new search directory added whenever 
--enable-cshadow-headers in a configure option. This shouldn't
cause any problems, as we can just _not_ install the shadow
headers until they are ready. (is this assumption sane ?)

Having this new search path added will make it easier to work
on the _real_ cshadow problem a bit more efficiently (I imagine).

cheers.
  brent

-- 
Damon Brent Verner                        o      _     _         _
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