use die instead of MPI_Abort

Revert "[findpt] No more setup inside findpt_eval (Nek5000#43)"

This reverts commit 26e56f4.

fix Nek5000#41

allow findptsms to find points in elements of particular session (Nek…

…5000#35)

Cache r-s-t data for local interpolation to avoid redundant communica…

…tion (Nek5000#34)

support gs_float in Fortran interface and fix gs_test

Update all tests to new header file

make findpts_el_3_test2 return 0

Update Makefile

read AMG files in parallel and add handler for mxm and exit