hints/machten.sh: disable semctl(), align with devel version

semctl(.., .., IPC_STATUS, ..) hangs the system on MachTen 4.1.  Here's a
patch to make hints/machten.sh assert that semctl() isn't available.  The
patch also brings the maintenance track hints file into line with that in
the development track, which is slightly more up-to-date.

p5p-msgid: v03110701b175fc029eb1@[195.95.102.115]

hints/machten.sh

@@ -13,6 +13,9 @@
 #	Martijn Koster <m.koster@webcrawler.com>
 #	Richard Yeh <rcyeh@cco.caltech.edu>
 #
+# Use of semctl() can crash system: disable -- Dominic Dunlop 980506
+# Raise stack size further; slight tweaks to accomodate MT 4.1
+#                      -- Dominic Dunlop <domo@computer.org> 980211
 # Raise perl's stack size -- Dominic Dunlop <domo@tcp.ip.lu> 970922
 # Reinstate sigsetjmp iff version is 4.0.3 or greater; use nm
 # (assumes Configure change); prune libswanted -- Dominic Dunlop 970113
@@ -37,7 +40,7 @@ nmopts=-gp
 # Increase perl's stack size.  Without this, lib/complex.t crashes out.
 # Particularly perverse programs may require that perl has an even larger
 # stack allocation than that specified here.  (See  man setstackspace )
-ldflags='-Xlstack=0x014000'
+ldflags='-Xlstack=0x018000'
 
 # Install in /usr/local by default
 prefix='/usr/local'
@@ -51,6 +54,9 @@ alignbytes=8
 # friends.  Use setjmp and friends instead.
 expr "$osvers" \< "4.0.3" > /dev/null && d_sigsetjmp='undef'
 
+# semctl(.., ..,  IPC_STATUS, ..) hangs system: say we don't have semctl()
+d_semctl='undef'
+
 # Get rid of some extra libs which it takes Configure a tediously
 # long time never to find on MachTen
 set `echo X "$libswanted "|sed -e 's/ net / /' -e 's/ socket / /' \
@@ -61,6 +67,8 @@ set `echo X "$libswanted "|sed -e 's/ net / /' -e 's/ socket / /' \
 shift
 libswanted="$*"
 
+# While link counts on MachTen 4.1's fast file systems work correctly,
+# on Macintosh Heirarchical File Systems, (and on HFS+)
 # MachTen always reports ony two links to directories, even if they
 # contain subdirectories.  Consequently, we use this variable to stop
 # File::Find using the link count to determine whether there are
@@ -71,11 +79,14 @@ dont_use_nlink=define
 
 cat <<'EOM' >&4
 
-Tests
-	io/fs test 4  and
-	op/stat test 3
-may fail since MachTen does not return a useful nlinks field to stat
-on directories.
+During Configure, you may see the message
+
+*** WHOA THERE!!! ***
+    The recommended value for $d_semctl on this machine was "undef"!
+    Keep the recommended value? [y]
+
+Select the default answer: semctl() is buggy, and perl should be built
+without it.
 
 At the end of Configure, you will see a harmless message
 
@@ -84,5 +95,12 @@ Hmm...You had some extra variables I don't know about...I'll try to keep 'em.
         Propagating recommended variable nmopts
 Read the File::Find documentation for more information about dont_use_nlink
 
+Tests
+	io/fs test 4  and
+	op/stat test 3
+may fail since MachTen may not return a useful nlinks field to stat
+on directories.
+
 EOM
-test -r ./broken-db.msg && . ./broken-db.msg
+expr "$osvers" \< "4.1" >/dev/null && test -r ./broken-db.msg && \
+    . ./broken-db.msg