have test_react output the burn state that took the longest

[zingale]

this creates a file called zone_state.out with the burn_t

[zingale]

I removed the OpenMP bits from here since I don't think we've been using them (especially on the GPU) and I wasn't sure how to do it together with this reduce

[zingale]

oh, it looks like the openmp stuff is implicit here, in the reduce_op.eval()

[zingale]

CPU tests: http://groot.astro.sunysb.edu/Microphysics/test-suite/gfortran/

[zingale]

curiously this changes the test_nova integration on GPUs? http://groot.astro.sunysb.edu/Microphysics/test-suite/gpu/2022-08-19-001/index.html