bulwahn [Wed, 17 Oct 2012 14:13:57 +0200] rev 49897
moving Pair_inject from legacy and duplicate section to general section, as Pair_inject was considered a duplicate in e8400e31528a by mistake (cf. communication on dev mailing list)
bulwahn [Wed, 17 Oct 2012 14:13:57 +0200] rev 49896
employing a preprocessing conversion that rewrites {(x1, ..., xn). P x1 ... xn} to {(x1, ..., xn) | x1 ... xn. P x1 ... xn} in set_comprehension_pointfree simproc