hints system changes and more Mac packaging

update file headers
add "#-PRE" and "#-POST" keywords (no default) so hints file can wrap Makefile.*
add make var with name of makefile (e.g. MAKEFILE_TOP) so hints file can be
 conditional on the file
add skeletel Mac Qt packaging target
add missing aux file generation for Mac Term packaging

sys/unix/mkmkfile.sh

@@ -1,23 +1,42 @@
 #!/bin/sh
 # NetHack 3.5  mkmkfile.sh	$Date$  $Revision$
-#      SCCS Id: @(#)macosx 3.5     2007/12/12
 # Copyright (c) Kenneth Lorber, Kensington, Maryland, 2007.
 # NetHack may be freely redistributed.  See license for details.
 
 # build one makefile
 # args are:
 #  $1 basefile
-#  $2 install path
-#  $3 hints file
+#  $2 basefile tag
+#  $3 install path
+#  $4 hints file
 
-echo "#" > $2
-echo "# This file is generated automatically.  Do not edit." >> $2
-echo "# Your changes will be lost.  See sys/unix/NewInstall.unx." >> $2
-echo "###" >> $2
-echo "### Start $3" >> $2
-echo "###" >> $2
-cat $3 >> $2
-echo "### end of file" >> $2
-echo "### Start $1" >> $2
-cat $1 >> $2
-echo "### end of file" >> $2
+echo "#" > $3
+echo "# This file is generated automatically.  Do not edit." >> $3
+echo "# Your changes will be lost.  See sys/unix/NewInstall.unx." >> $3
+echo "# Identify this file:" >> $3
+echo "MAKEFILE_$2=1" >> $3
+echo "" >> $3
+
+echo "###" >> $3
+echo "### Start $4 PRE" >> $3
+echo "###" >> $3
+awk '/^#-PRE/,/^#-POST/{ \
+	if(index($0, "#-PRE") == 1) print "# (new segment at source line",NR,")"; \
+	if(index($0, "#-P") != 1) print}' $4 >> $3
+echo "### end $4 PRE" >> $3
+echo "" >> $3
+
+echo "###" >> $3
+echo "### Start $1" >> $3
+echo "###" >> $3
+cat $1 >> $3
+echo "### end of file" >> $3
+echo "" >> $3
+
+echo "###" >> $3
+echo "### Start $4 POST" >> $3
+echo "###" >> $3
+awk '/^#-POST/,/^#-PRE/{ \
+	if(index($0, "#-POST") == 1) print "# (new segment at source line",NR,")"; \
+	if(index($0, "#-P") != 1) print}' $4 >> $3
+echo "### end $4 POST" >> $3