[fortran,patch] Inline intrinsics: EXPONENT, FRACTION, NEAREST, RRSPACING, SET_EXPONENT and SPACING

[FX Coudert]

> I think that settles it then. Patch is ok, provided you replace all  
> occurences of ldexp* with scalbn*

Committed with that modification, after final bootstrap & regtesting  
on x86_64-linux (both -m32 and -m64).

Thanks for the review,
FX

-- 
François-Xavier Coudert
http://www.homepages.ucl.ac.uk/~uccafco/