Rename check_correctness function

...driver/legacy_interface/legacy_complex_driver_c_version.c

.../C/driver/legacy_interface/legacy_real_driver_c_version.c

...legacy_interface/legacy_single_complex_driver_c_version.c

...er/legacy_interface/legacy_single_real_driver_c_version.c

.../elpa1/legacy_interface/legacy_complex_1stage_c_version.c

test/C/elpa1/legacy_interface/legacy_real_1stage_c_version.c

.../elpa2/legacy_interface/legacy_complex_2stage_c_version.c

test/C/elpa2/legacy_interface/legacy_real_2stage_c_version.c

...Fortran/driver/legacy_interface/legacy_complex_driver.F90

test/Fortran/driver/legacy_interface/legacy_real_driver.F90

.../driver/legacy_interface/legacy_single_complex_driver.F90

...ran/driver/legacy_interface/legacy_single_real_driver.F90

test/Fortran/elpa1/legacy_interface/legacy_complex.F90

test/Fortran/elpa1/legacy_interface/legacy_complex_gpu.F90

test/Fortran/elpa1/legacy_interface/legacy_real.F90

test/Fortran/elpa1/legacy_interface/legacy_real_gpu.F90

.../Fortran/elpa1/legacy_interface/legacy_single_complex.F90

...tran/elpa1/legacy_interface/legacy_single_complex_gpu.F90

test/Fortran/elpa1/legacy_interface/legacy_single_real.F90

...Fortran/elpa1/legacy_interface/legacy_single_real_gpu.F90