flag_elements_by_nelem_target should now obey max_h_level and should avoid "over-coarsening" or "over-refining" when many elements have the same error value
flag_elements_by_nelem_target should now obey max_h_level and should
avoid "over-coarsening" or "over-refining" when many elements have the
same error value


git-svn-id: ffc1bc5b3feaf8644044862cc38c386ade156493@1891 434f946d-2f3d-0410-ba4c-cb9f52fb0dbf

certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh