Toggle F function disabled error only for GPU code

[agoetz]

By default f functions for GPUs are disabled. Enabling f functions requires setting -DENABLEF=TRUE when running cmake. The code quits with an appropriate error message when encountering a basis set with f functions while f functions have not been enabled. This is correct behavior for the GPU code path.

For CPU code, however, F functions are always enabled. The code should not quit when encountering F functions in the CPU code path.

Following code in basis.f90 should be protected with #if defined(GPU)

#ifndef ENABLEF
   if(quick_method%hasF) then
       ierr=36
       return
   endif
#endif

[ohearnk]

Per discussion, there are potential CPU-side code issues as ENABLEF controls the allocations sizes for several variables:

• src/modules/quick_basis_module.f90: gcexpo, gccoeff, unnorm_gccoeff
• src/basis.f90: Yxiaoprim, AA, BB, CC

Also, ENABLEF is not always on for builds for CPU versions (serial, MPI). For now, we'll punt to 25.08 on addressing the above change and on whether we should always pass -DENABLEF for CPU builds.