Following up on Blair's recommendation, the following patches allow a 
'make release' to build successfully on port amd64.

cvs diff: Diffing distrib/amd64/ramdisks
cvs diff: Diffing distrib/amd64/ramdisks/common
Index: distrib/amd64/ramdisks/common/list.ramdisk
===================================================================
RCS file: /cvsroot/src/distrib/amd64/ramdisks/common/list.ramdisk,v
retrieving revision 1.3
diff -u -p -r1.3 list.ramdisk
--- distrib/amd64/ramdisks/common/list.ramdisk  21 Aug 2007 02:20:56 
-0000      1.3
+++ distrib/amd64/ramdisks/common/list.ramdisk  21 Aug 2007 23:22:18 
-0000
@@ -1,6 +1,6 @@
  #      $NetBSD: list.ramdisk,v 1.3 2007/08/21 02:20:56 skd Exp $

-SRCDIRS        bin sbin usr.bin usr.sbin gnu/usr.bin
+SRCDIRS        bin sbin usr.bin usr.sbin gnu/usr.bin libexec

  # init invokes the shell as -sh
  ARGVLN sh -sh
cvs diff: Diffing distrib/amd64/ramdisks/ramdisk
Index: distrib/amd64/ramdisks/ramdisk/list
===================================================================
RCS file: /cvsroot/src/distrib/amd64/ramdisks/ramdisk/list,v
retrieving revision 1.3
diff -u -p -r1.3 list
--- distrib/amd64/ramdisks/ramdisk/list 21 Aug 2007 02:20:55 -0000 
1.3
+++ distrib/amd64/ramdisks/ramdisk/list 21 Aug 2007 23:22:18 -0000
@@ -56,7 +56,7 @@ PROG  usr/bin/gzip    usr/bin/gzcat usr/bin/
  PROG   usr/bin/less    usr/bin/more
  PROG   usr/bin/sed

-PROG   usr/libexec/lfs_cleanerd
+PROG   libexec/lfs_cleanerd

  PROG   usr/sbin/installboot



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