cpplib: Separate out translation phases 1 and 2

[Neil Booth]

Devang Patel wrote:-

> Plus now we know how much speed up we have to achieve with future
> optimizations to reach original level.
> 
> And when somebody scream on us saying GCC 3.4 is slow than we know where
> to start hunt if we keep such numbers for all important reorg/new 
> features.
> 
> It is up to you and/or others to decide if this is a blocker or not.
> I was just interested numbers.
> 
> Thank you very much,

No problem.  I'll keep the directory as-is, and only apply CPP patches
to it.  It'll be interesting to see where it is in a week, and a month, say.

Neil.