Cleaned up GIZMO code, added SineWavePotential tests.

The GIZMO code should now be clean enough to merge with master, and to be used in scaling tests.

I have added 1-3D versions of a new SineWavePotential test, which tests gravitational hydrostatic equilibrium in an unphysical but convenient 1D periodic sine wave potential. This allows testing gravity + GIZMO hydro without running into boundary condition problems. Unfortunately, the non conservative form of the potential makes it impossible to test energy conservation in these tests. GIZMO can keep all three set ups stable with both an isothermal and an ideal gas equation of state. I have currently only tested with the exact Riemann solver, but the approximate solvers should work as well.

The code is still not stable enough to cope with the hydrostatic and disc patch tests; these are next on my list.

Added 28 commits:

• cf57807a...0b3df5fe - 26 commits from branch master
• f96fb228 - Merge branch 'master' into gizmo_fix
• ebbae198 - Added new potential to the dist targets

Thanks !

I have just added the new potential to the "dist" target in the Makefile. I guess you want to keep the branch alive ?

Status changed to merged

mentioned in commit 0dc16751

Yes, I'm not quite done with that branch yet.

@jwillis: master is good to go for gizmo benchmarking.

Okay, I've submitted a job