Update manual for new memory function override.
Update manual for new memory function override.

wbhart/flint2,jpflori/flint2,fredrik-johansson/flint2,jpflori/flint2,jpflori/flint2,dsroche/flint2,fredrik-johansson/flint2,dsroche/flint2,jpflori/flint2,fredrik-johansson/flint2,wbhart/flint2,dsroche/flint2,wbhart/flint2,dsroche/flint2