some missing _LT_DECL_SED requirements

[Ralf Wildenhues]

Eric reported this against CVS M4 recently:
http://lists.gnu.org/archive/html/m4-patches/2006-05/msg00005.html

OK?

Cheers,
Ralf

        * libltdl/m4/libtool.m4 (_LT_LINKER_OPTION): Require
        _LT_DECL_SED.
        (_LT_CMD_GLOBAL_SYMBOLS, _LT_LINKER_SHLIBS): Likewise.
        * libltdl/m4/ltdl.m4 (LTDL_INIT): Likewise.
        Report by Eric Blake.

Index: libltdl/m4/libtool.m4
===================================================================
RCS file: /cvsroot/libtool/libtool/libltdl/m4/libtool.m4,v
retrieving revision 1.64
diff -u -r1.64 libtool.m4
--- libltdl/m4/libtool.m4       14 May 2006 08:43:58 -0000      1.64
+++ libltdl/m4/libtool.m4       15 May 2006 16:13:17 -0000
@@ -1308,6 +1308,7 @@
 # Check whether the given linker option works
 AC_DEFUN([_LT_LINKER_OPTION],
 [m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])
 AC_CACHE_CHECK([$1], [$2],
   [$2=no
    save_LDFLAGS="$LDFLAGS"
@@ -3116,6 +3117,7 @@
 AC_REQUIRE([AC_OBJEXT])dnl
 AC_REQUIRE([LT_PATH_NM])dnl
 AC_REQUIRE([LT_PATH_LD])dnl
+m4_require([_LT_DECL_SED])dnl
 m4_require([_LT_DECL_EGREP])dnl
 m4_require([_LT_TAG_COMPILER])dnl
 
@@ -3907,6 +3909,7 @@
 AC_REQUIRE([LT_PATH_NM])dnl
 m4_require([_LT_FILEUTILS_DEFAULTS])dnl
 m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_DECL_SED])dnl
 m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
 m4_require([_LT_TAG_COMPILER])dnl
 AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
Index: libltdl/m4/ltdl.m4
===================================================================
RCS file: /cvsroot/libtool/libtool/libltdl/m4/ltdl.m4,v
retrieving revision 1.26
diff -u -r1.26 ltdl.m4
--- libltdl/m4/ltdl.m4  23 Mar 2006 22:39:41 -0000      1.26
+++ libltdl/m4/ltdl.m4  15 May 2006 16:13:17 -0000
@@ -255,6 +255,7 @@
 m4_require([_LT_CHECK_OBJDIR])dnl
 m4_require([_LT_HEADER_DLFCN])dnl
 m4_require([_LT_CHECK_DLPREOPEN])dnl
+m4_require([_LT_DECL_SED])dnl
 
 dnl Don't require this, or it will be expanded earlier than the code
 dnl that sets the variables it relies on: