gamess-us: 2023R1P1 -> 2024R2P1

[sheepforce]

Updates GAMESS to the current version: https://www.msg.chem.iastate.edu/gamess/versions.html

EDIT: Somewhere in the refactoring of OpenMPI upstream, orterun was lost from mpi.bin. It is merely an alias to mpiexec. However, rungms wants to use orterun.

• Patch rungms to use mpiexec instead of orterun.

[markuskowa]

Somewhere in the refactoring of OpenMPI upstream, orterun was lost from mpi.bin

OpenMPI-5 has switched to from the ORTE runtime env to PRRTE, thus not orterun anymore. It's a weird choice anyway to access orterun instead of mpirun/mpiexec, as these are standardized.

Otherwise, the diff looks harmless this time :)