This is in preparation for building postgres with meson / ninja.
Move the dtrace postprocessing sed commands into a separate file so
that it can be shared by meson. Also split the rule into two for
proper dependency declaration.
Reviewed-by: Andres Freund <andres@anarazel.de>
Author: Peter Eisentraut <peter@eisentraut.org>
Discussion: https://postgr.es/m/5e216522-ba3c-f0e6-7f97-5276d0270029@enterprisedb.com
Bruce Momjian
Andres Freund