Clean-up feedback

Hi

I plan to clean-up some items - please comment or object to any of the items below

1) I'd like to move the old cmake stuff from requiring a manual rename to a new dir and add a top level if() which allows it to be activated. It would be off by default and require something like
cmake -DSIMPLE_BUILD=ON

2) I'd like to remove some of the perl dep - expand-vars.pl - I find it almost comical that perl is required here.
Everything named *.var..
omp.h.var
omp_lib.f90.var
libiomp.rc.var

3) if I have time/patience I'll possibly do some other cmake related clean-ups. Such as target/arch detection