Try again to plug small memory leak
Revert "Plug small memory leak"
This reverts commit 10863fde80067f904669541b3d3b471e3086bbcd.
Sync with rpf 0.16
Plug small memory leak
CSOLNP: memory leaks v2
Remove some obsolete comments
Fix deriv test
Examine accuracy of derivs
Reorg to adjust the tolerance for Ramsay damping
It may makes no practical difference, but maybe it is the right thing to