perl5.000 patch.0i: fix glaring mistakes in patches a-h

This patch does the following things:
    1.  Fix various bonehead errors I introduced in patches a-g.
    2.  Incorporate MakeMaker changes to bring it up to version 4.01 (mostly).
    3.  Stick in things I forgot in patches a-g (e.g. AIX).
    4.  Some minor additional cleanup in x2p/ for even pickier compilers.
    5.  More hints updates (hpux and next).
    6.  Include newest dl_hpux.xs.

I didn't have time to
    1.  Fix the overlapping strcpy() in op.c
    2.  Restore h2xs to Larry's original design to process <>.
    3.  take out unnecessary "use Config" in installperl. 
    4.  Add in vms patches.

I forgot to
    [If I remembered what i forgot, I wouldn't have forgotten it. :]

I deliberately decided *not* to
    1.  Touch pod/*
    2.  deal with overloading


Specifically, here's what's included:

Configure
        Regenerated to be sure it's up-to-date. 

Makefile.SH
        Build extension libraries right into lib/auto/whatever.
        Don't set CCCDLFLAGS since we don't use it anyway.
        Take care to avoid modifying lib/Config.pm without reason
        Visit DynaLoader for  `make clean'.  (Previously only did
    so for `make realclean'.)
        @echo "Note that make realclean does not delete config.sh"
        Include config.h dependency.
  
U/i_db.U
config_h.SH
config.H
        Remove unwanted quotes around db_hashtype and db_prefixtype.
        
configpm
        Allow specification of alternate name for lib/Config.pm,
        so the makefile mv-if-diff trick saves needless re-making.
  
ext/DynaLoader/DynaLoader.pm
        Updated warning messages and comments.

ext/DynaLoader/dl_hpux.xs
        Updated to version 2.1.  Now uses bootstrap files.

ext/util/make_ext
        Explicitly use #!/bin/sh to start it up.  This is useful
    for testing make_ext.
        Improve & simplify Nested::Extension::Processing.
        More robust handling of `make clean'.

hints/hpux_9.sh
        Support both the bundled and unbundled compilers.
        
hints/next_3_2.sh
        Back to using -posix rather than POSIX_SOURCE.  And that only
    for ext/POSIX/POSIX.xs.
        
installperl
        Special ranlib treatment for NeXT, which gets confused about
    timestamps in libraries, even when you just copy the library.
        Supply missing '$' in samepath() function.
        
lib/AutoSplit.pm
        New parameters.

lib/ExtUtils/MakeMaker.pm
        Upgraded from 3.8 to 4.01.

lib/ExtUtils/xsubpp
        Documentation changed from man to pod.

lib/Getopt/Long.pm
        Avoid typo warning.
        Drop unused $optx.

lib/Text/Tabs.pm
        Fix package name.

makedepend.SH
        Explicitly start with $startsh.
        Catch cpp that prints # <stdin> instead of line numbers.

perl.h
        Fix bonehead mistake that ended up calling my_fmod even if
    not needed.

perl_exp.SH
        also add symbols from interp.sym

proto.h
        Delete 2 redundant prototypes (newBINOP and newUNOP).

util.c
        Add (char *) casts to unsigned char args to bcmp.

x2p/a2p.h
        Rearrange order of <string?.h> and bcopy & bzero stuff.
        Change a few function prototypes to void, to reflect actual
    usage.

x2p/a2py.c
        Change a few function types to void, to reflect actual usage.
      
x2p/handy.h
        Make *alloc declarations match those in x2p/util.c.

x2p/util.c
        Make *alloc declarations match those in x2p/handy.h.
  
x2p/walk.c
        Add a (Size_t) cast for comparison of 1 to the result of strlen(). 

Thanks to all who's work is included here.  Little of it is mine.

1 files changed, 52 insertions, 24 deletions

diff --git a/ext/util/make_ext b/ext/util/make_ext
index f4a1b8884e..ae10a9d628 100644
--- a/ext/util/make_ext
+++ b/ext/util/make_ext
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 # This script acts as a simple interface for building extensions.
 # It primarily used by the perl Makefile:
 #
@@ -31,24 +33,27 @@ if test "X$extspec" = X; then
 	exit 1;
 fi
 
-# canonise
-extspec=`echo "$extspec" | sed -e 's:^ext/::' -e 's:\.[^\.]*$::'`
-extspec="ext/$extspec"
-tailext=`echo "$extspec" | sed -e 's:.*/\([^/]*\)$:\1:'"`
-headext=`echo "$extspec" | sed -e 's:/[^/]*$::'"`
-if test -d "$headext/$tailext"; then
-    extspec="$headext/$tailext"
-fi
-if test -f "$extspec/$tailext.xs"; then
-    extspec="$extspec/$tailext"
-fi
+# The Perl Makefile.SH will expand all extensions to
+#	lib/auto/X/X.a  (or lib/auto/X/Y/Y.a is nested)
+# A user wishing to run make_ext might use
+#	X (or X/Y or X::Y is nested)
+
+# canonise into X/Y form (pname)
+case "$extspec" in
+lib*)	# Remove lib/auto prefix and /*.* suffix
+	pname=`echo "$extspec" | sed -e 's:^lib/auto/::' -e 's:/[^/]*\.[^/]*$::' ` ;;
+*::*)	# Convert :: to /
+	pname=`echo "$extspec" | sed -e 's/::/\//g' ` ;;
+*)	pname="$extspec" ;;
+esac
+# echo "Converted $extspec to $pname"
 
-# get extension directory path, module name and depth
-pname=`echo "$extspec" | sed -e 's:^ext/::' -e 's:/[^/]*$::'`
 mname=`echo "$pname"   | sed -e 's!/!::!g'`
 depth=`echo "$pname"   | sed -e 's![^/][^/]*!..!g'`
 make=${altmake-make}
+makefile=Makefile
 makeargs=''
+makeopts=''
 
 if test ! -d "ext/$pname"; then
     echo "	Skipping $extspec (directory does not exist)"
@@ -62,28 +67,51 @@ cd ext/$pname
 
 # check link type and do any preliminaries
 case "$target" in
-	# convert 'static' or 'dynamic' into 'all LINKTYPE=XXX'
-static)  makeargs="LINKTYPE=static CCCDLFLAGS="; target=all ;;
-dynamic) makeargs="LINKTYPE=dynamic";            target=all ;;
-*clean)	;;
+	    # convert 'static' or 'dynamic' into 'all LINKTYPE=XXX'
+static)     makeargs="LINKTYPE=static CCCDLFLAGS="
+	    target=all
+	    ;;
+dynamic)    makeargs="LINKTYPE=dynamic";
+	    target=all
+	    ;;
+
+*clean) # If Makefile has been moved to Makefile.old by a make clean
+	    # then use Makefile.old for realclean rather than rebuild it
+	    if test ! -f $makefile -a -f Makefile.old; then
+		makefile=Makefile.old
+		makeopts="-f $makefile"
+		echo "Note: Using Makefile.old"
+	    fi
+	    ;;
+
 *)	# for the time being we are strict about what make_ext is used for
-	echo "make_ext: unknown make target '$target'"; exit 1;;
-'')	echo "make_ext: no make target specified (eg static or dynamic)"; exit 1;;
+	echo "make_ext: unknown make target '$target'"; exit 1
+	;;
+'')	echo "make_ext: no make target specified (eg static or dynamic)"; exit 1
+	;;
 esac
 
-if test ! -f Makefile ; then
+if test ! -f $makefile ; then
 	test -f Makefile.PL && ../$depth/miniperl -I../$depth/lib Makefile.PL
 fi
-if test ! -f Makefile ; then
-	test -f Makefile.SH && sh Makefile.SH
+if test ! -f $makefile ; then
+	if test -f Makefile.SH; then
+		echo "Warning: Writing $makefile from old-style Makefile.SH!"
+		sh Makefile.SH
+	else
+		echo "Warning: No Makefile!"
+	fi
 fi
 
 case "$target" in
 clean)		;;
 realclean)	;;
-*)		$make config $passthru;;
+*)	# Give makefile an opportunity to rewrite itself.
+	# reassure users that life goes on...
+	$make config $passthru || echo "$make config failed, continuing anyway..."
+	;;
 esac
 
-$make $target $makeargs $passthru || exit
+$make $makeopts $target $makeargs $passthru || exit
 
 exit $?