[PATCH] Remove unused libgfortran functions

[FX]

> Now that the libgfortran ABI major version has been bumped, we can
> remove functions for which the frontend nowadays generates inline
> code.
> 
> This removes the malloc, free, exponent, fraction, nearest, rrspacing,
> spacing, set_exponent and transpose intrinsics. Also the unused
> store_exe_path function is removed.
> 
> Regtested on x86_64-pc-linux-gnu, Ok for trunk?

I’m okaying the patch as is. While we continue cleaning up the library (I have submitted a number of patches now) we should discuss how we will arrange the symbols in gfortran.map at the end.

FX