dtksh: use bin/package flat make instead of shell

Shell isn't portable, so upstream ksh93 has a "flat" function that we can use
to put binaries in a static place that doesn't require a shell command. We still
do need an intermediate setup.sh shell script due to a bug in ksh that object
files aren't being put in lib, and FEATURE not in include. We also cut out some
 unused symbols, and a hpux specific implementation of dynlib (new hpux should
 conform to the posix implementation anyhow.)

cde/programs/dtksh/setup.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+#this script is necessary due to a bug in ksh where flat make doesnt actually
+#put all assets we need in the proper directories
+
+HOSTDIR=$(./ksh93/bin/package host)
+
+cp ./ksh93/arch/$HOSTDIR/src/cmd/ksh93/pmain.o pmain.o
+ln -s ./ksh93/arch/$HOSTDIR/src/cmd/ksh93/FEATURE FEATURE