Build system reworked to one global Makefile with includes and no nesting

Also removed the lib-dir merging with sysdep. Updated #include's
accordingly.

Fixed make doc on recent Debian together with moving generated doc into
objdir.

Moved Makefile.in into root dir

Retired all.o and birdlib.a
Linking the final binaries directly from all the .o files.

configure.in

@@ -23,24 +23,16 @@ AC_ARG_VAR([M4], [location of the M4 program])
 if test "$srcdir" = . ; then
 	# Building in current directory => create obj directory holding all objects
 	objdir=obj
-	mkdir -p obj
-	srcdir_rel=..
-	makefiles="Makefile:tools/Makefile-top.in obj/Makefile:tools/Makefile.in obj/Rules:tools/Rules.in"
-	exedir=..
 else
 	# Building in separate directory
 	objdir=.
-	srcdir_rel=$srcdir
-	makefiles="Makefile:tools/Makefile.in Rules:tools/Rules.in"
-	exedir=.
 fi
-case $srcdir_rel in
-	/*)	srcdir_rel_mf=$srcdir_rel ;;
-	*)	srcdir_rel_mf="\$(root-rel)$srcdir_rel" ;;
-esac
+
+exedir=.
+
 AC_SUBST(objdir)
 AC_SUBST(exedir)
-AC_SUBST(srcdir_rel_mf)
+AC_SUBST(srcdir)
 AC_SUBST(runtimedir)
 
 
@@ -162,7 +154,7 @@ sysname=`echo $sysdesc | sed 's/\.h$//'`
 AC_DEFINE_UNQUOTED(SYSCONF_INCLUDE, "$sysdesc")
 
 AC_MSG_CHECKING([system-dependent directories])
-sysdep_dirs="`sed <$sysdesc '/^Link: /!d;s/^Link: \(.*\)$/\1/' | tr '\012' ' '` lib"
+sysdep_dirs="`sed <$sysdesc '/^Link: /!d;s/^Link: \(.*\)$/\1/' | tr '\012' ' '`"
 AC_MSG_RESULT($sysdep_dirs)
 AC_SUBST(sysdep_dirs)
 
@@ -234,10 +226,10 @@ if test "$enable_debug" = yes ; then
 	fi
 fi
 
-CLIENT=
+CLIENT=birdcl
 CLIENT_LIBS=
 if test "$enable_client" = yes ; then
-	CLIENT=birdc
+	CLIENT="$CLIENT birdc"
 	AC_CHECK_LIB(history, add_history, CLIENT_LIBS="-lhistory")
 	AC_CHECK_LIB(ncurses, tgetent, USE_TERMCAP_LIB=-lncurses,
 		AC_CHECK_LIB(curses, tgetent, USE_TERMCAP_LIB=-lcurses,
@@ -255,17 +247,9 @@ AC_SUBST(CLIENT_LIBS)
 
 mkdir -p $objdir/sysdep
 AC_CONFIG_HEADERS([$objdir/sysdep/autoconf.h:sysdep/autoconf.h.in])
-AC_CONFIG_COMMANDS([merge],[[export CPP="$CPP"
-$srcdir/tools/mergedirs $srcdir $srcdir_rel $objdir $sysdep_dirs]],
-	[[srcdir=$srcdir]
-	[srcdir_rel=$srcdir_rel]
-	[objdir=$objdir]
-	[sysdep_dirs="$sysdep_dirs"]])
-AC_CONFIG_FILES($makefiles)
+AC_CONFIG_FILES(Makefile:Makefile.in)
 AC_OUTPUT
 
-rm -f $objdir/sysdep/paths.h
-
 cat >&AC_FD_MSG <<EOF
 
 BIRD was configured with the following options: