single precision compilation of cp2k

[Axel]

success!!

after disabling the f77_blas_XXX objects and
using preprocessor directives to rename BLAS/LAPACK,
it seems to work in serial for some simple quickstep
inputs (e.g. 32 bulk water benchmark).

i'm pretty certain, that there are more problems
ahead, but this is still a promising start.

we'll have to discuss how to move on from here.
as always, thanks a lot for your help, teo.

ciao,
  axel.