compile time with the iterator-5 patch

[Lars Gullik Bjønnes]

Just as a data-point:

real    11m17.221s
user    10m9.080s
sys     0m55.200s
 
This is with boost release candidate 1.31.0 and gcc 3.4 prerelease.
(just the xforms frontend)

I'll do a compile of clean lyx cvs now.

-- 
        Lgb