libstdc++-v3 configure question

[law@redhat.com]

  In message < Pine.SOL.3.91.1010419172720.22739A-100000@cse.cygnus.com >you writ
e:
  > > That might break things if any of the guarded things impact sizes of
  > > types, mangled names, etc.  
  > 
  > Doh. Forgot about this. You are right, of course. 
  > 
  > Jeff, do you think some kind of solution can be found using 
  > CPLUSPLUS_CPP_SPEC?
Yea.  I can cobble something together using CPLUSPLUS_CPP_SPEC.  In fact
I've already done it and will be reviewing the test results shortly.
jeff