Merge pull request #1 from mkuron/EwaldGPU

EwaldGPU: CUDA und MPI auseinandergezogen und cudaFreeHost korrekt benutzt
Energy computed correctly but tcl-command "analyze energy coulomb" shows only short range energy (total energy "analyze energy" ist correct)
Merge branch 'EwaldGPU' of https://github.com/sehrhardt/espresso into EwaldGPU
Energie works
Energy works
Ewaldgpu.tcl improved and TODO-List
TODO-List Kuron
Indentions
Indentions2
Ewaldgpu_tcl rearrangements
Coulomb prefactor energy
Small changes
Compute q_sqr works via MPI
Ewaldgpu: Energy works
Ewaldgpu: Testsuite works
Ewaldgpu: User guide
Clean up for pull request