scheme48-1.8 and --as-needed, DESTDIR, -D_GNU_SOURCE

Hi scheme48's developers,

 Recently, in gentoo, after upgrading to glibc-2.8, we experienced some
bugs in compilation time of scheme48-1.8. The first had to do with
headers: 

<cut>
i686-pc-linux-gnu-gcc -c  -DHAVE_CONFIG_H
-D__COMPILING_SCHEME48_ITSELF__
-DS48_HOST_ARCHITECTURE=\"i686-pc-linux-gnu\" -I ./c -I./c -I./c/bibop
-O2 -march=i686 -pipe -pthread -o c/unix/socket.o c/unix/socket.c
c/unix/socket.c: In function ‘gethostbyname_thread’:
c/unix/socket.c:354: error: ‘struct hostent’ has no member named
‘h_addr’
c/unix/socket.c: In function ‘s48_get_host_by_name’:
c/unix/socket.c:385: error: ‘struct hostent’ has no member named
‘h_addr’
make: *** [c/unix/socket.o] Error 1
make: *** Waiting for unfinished jobs....
</cut>

This happens because the new header /usr/include/netdb.h does now:

#if defined __USE_MISC || defined __USE_GNU
# define        h_addr  h_addr_list[0] /* Address, for backward
# compatibility.*/
#endif

and to be __USE_GNU defined, "-D_GNU_SOURCE" must be added to the
default $(DEFS). 

The second issue is the lack of DESTDIR in config_script,
something I think you have fixed in your stable development branch as I
can see in
http://www.deinprogramm.de/cgi-bin/hgs48-stable.cgi/rev/1f349e4f8f3b , so
this is just a reminder:)

The third bug is a bit weird, and has to do with a failure that happens
when --as-needed is used in our LD_FLAGS, and gets solved when: 
<cut>
-$(LIBOBJS) $(LIBS)\
-$(EXTERNAL_OBJECTS)
+$(LIBOBJS)\
+$(EXTERNAL_OBJECTS) $(LIBS)
</cut>

in Makefile.in

Maybe you already know the issues, but if you don't, I hope that you will
accept my tiny harmless patch(attached below) for your Makefile.in, and
apply it on your next release,

thank you,
Panagiotis

(sorry for sending this, to both {scheme-48,scheme48-bugs}@s48.org
mailing lists, I'm just new to the lists, and I don't know where
I should post)

-- 
Panagiotis Christopoulos(pchrist)
------ Gentoo Lisp Project ------

--- Makefile.in.orig	2008-06-30 20:01:49.000000000 +0300
+++ Makefile.in	2008-06-30 20:08:12.000000000 +0300
@@ -8,7 +8,7 @@
 VPATH = @srcdir@
 CC = @CC@
 LD = @LD@
-DEFS = @DEFS@ -D__COMPILING_SCHEME48_ITSELF__ -DS48_HOST_ARCHITECTURE=\"$(HOST_ARCHITECTURE)\"
+DEFS = @DEFS@ -D_GNU_SOURCE -D__COMPILING_SCHEME48_ITSELF__ -DS48_HOST_ARCHITECTURE=\"$(HOST_ARCHITECTURE)\"
 LIBS = @LIBS@
 CFLAGS = @CFLAGS@
 CPPFLAGS =
@@ -286,8 +286,8 @@
 	c/scheme48.exp c/scheme48.def
 	$(CC) $(LDFLAGS) $(LDFLAGS_VM) $(CFLAGS) -o $@ c/main.o		\
 		$(OBJS) $(GC_OBJS) $(UNIX_OBJS)				\
-		$(LIBOBJS) $(LIBS)					\
-		$(EXTERNAL_OBJECTS)
+		$(LIBOBJS)						\
+		$(EXTERNAL_OBJECTS) $(LIBS)
 	# Cygwin
 	if test -x /usr/bin/dlltool; then \
 		dlltool --dllname $(VM).exe --output-lib $(VM).a --def $(srcdir)/c/scheme48.def; \
@@ -409,7 +409,7 @@
 	done

 inst-config-script:
-	config_script=$(bindir)/$(CONFIG_SCRIPT) &&			\
+	config_script=$(DESTDIR)$(bindir)/$(CONFIG_SCRIPT) &&			\
 	sed -e 's,@incdir\@,$(incdir),g'				\
 	    -e 's,@libdir\@,$(libdir),g'				\
 	    -e 's,@CC\@,$(CC),g'					\