libtool: Revert "libtool: bump to 2.4.6"

This breaks the package builds using the SDK.
The targets all build fine, but the package builder fails on many
packages. The package builder uses the OpenWrt SDK.

This reverts commit c377d874be.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

tools/libtool/patches/100-libdir-fixes.patch

@@ -1,56 +1,83 @@
-From 67ffe8e8582a7ba1f1d1307a419098e6dd88bdaf Mon Sep 17 00:00:00 2001
-From: Eneas U de Queiroz <cotequeiroz@gmail.com>
-Date: Tue, 20 Jul 2021 16:41:11 -0300
-Subject: openwrt: cross-compilation path adjustments
-
-Comments from the patch:
-
-Adding 'libdir' from the .la file to our library search paths
-breaks crosscompilation horribly.  We cheat here and don't add
-it, instead adding the path where we found the .la.  -CL
-
-OE sets installed=no in staging. We need to look in $objdir and $absdir,
-preferring $objdir. RP 31/04/2008
-
-This was originally commited to openwrt by Jo-Philipp Wich
-<jow@openwrt.org>.
-
-(adjusted to v2.4.6)
-Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
-
---- a/build-aux/ltmain.in
-+++ b/build-aux/ltmain.in
-@@ -6049,8 +6049,14 @@ func_mode_link ()
- 	    absdir=$abs_ladir
- 	    libdir=$abs_ladir
+--- a/libltdl/config/ltmain.m4sh
++++ b/libltdl/config/ltmain.m4sh
+@@ -5731,8 +5731,14 @@ func_mode_link ()
+ 	    absdir="$abs_ladir"
+ 	    libdir="$abs_ladir"
  	  else
--	    dir=$lt_sysroot$libdir
--	    absdir=$lt_sysroot$libdir
+-	    dir="$lt_sysroot$libdir"
+-	    absdir="$lt_sysroot$libdir"
 +	    # Adding 'libdir' from the .la file to our library search paths
 +	    # breaks crosscompilation horribly.  We cheat here and don't add
 +	    # it, instead adding the path where we found the .la.  -CL
 +	    dir="$lt_sysroot$abs_ladir"
 +	    absdir="$abs_ladir"
 +	    libdir="$abs_ladir"
-+	    #dir=$lt_sysroot$libdir
-+	    #absdir=$lt_sysroot$libdir
++	    #dir="$libdir"
++	    #absdir="$lt_sysroot$libdir"
  	  fi
- 	  test yes = "$hardcode_automatic" && avoidtemprpath=yes
+ 	  test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
  	else
-@@ -6448,8 +6454,6 @@ func_mode_link ()
- 		add=$libdir/$linklib
+@@ -6130,8 +6136,6 @@ func_mode_link ()
+ 		add="$libdir/$linklib"
  	      fi
  	    else
 -	      # We cannot seem to hardcode it, guess we'll fake it.
--	      add_dir=-L$libdir
+-	      add_dir="-L$libdir"
  	      # Try looking first in the location we're being installed to.
  	      if test -n "$inst_prefix_dir"; then
  		case $libdir in
-@@ -6604,7 +6608,17 @@ func_mode_link ()
+@@ -6286,7 +6290,17 @@ func_mode_link ()
  		  fi
  		  ;;
  		*)
--		  path=-L$absdir/$objdir
+-		  path="-L$absdir/$objdir"
++                  # OE sets installed=no in staging. We need to look in $objdir and $absdir, 
++                  # preferring $objdir. RP 31/04/2008
++                  if test -f "$absdir/$objdir/$depdepl" ; then
++		    depdepl="$absdir/$objdir/$depdepl"
++		    path="-L$absdir/$objdir"
++                  elif test -f "$absdir/$depdepl" ; then
++		    depdepl="$absdir/$depdepl"
++		    path="-L$absdir"
++                  else
++		    path="-L$absdir/$objdir"
++                  fi
+ 		  ;;
+ 		esac
+ 		else
+--- a/libltdl/config/ltmain.sh
++++ b/libltdl/config/ltmain.sh
+@@ -6518,8 +6518,14 @@ func_mode_link ()
+ 	    absdir="$abs_ladir"
+ 	    libdir="$abs_ladir"
+ 	  else
+-	    dir="$lt_sysroot$libdir"
+-	    absdir="$lt_sysroot$libdir"
++	    # Adding 'libdir' from the .la file to our library search paths
++	    # breaks crosscompilation horribly.  We cheat here and don't add
++	    # it, instead adding the path where we found the .la.  -CL
++	    dir="$lt_sysroot$abs_ladir"
++	    absdir="$abs_ladir"
++	    libdir="$abs_ladir"
++	    #dir="$libdir"
++	    #absdir="$lt_sysroot$libdir"
+ 	  fi
+ 	  test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
+ 	else
+@@ -6917,8 +6923,6 @@ func_mode_link ()
+ 		add="$libdir/$linklib"
+ 	      fi
+ 	    else
+-	      # We cannot seem to hardcode it, guess we'll fake it.
+-	      add_dir="-L$libdir"
+ 	      # Try looking first in the location we're being installed to.
+ 	      if test -n "$inst_prefix_dir"; then
+ 		case $libdir in
+@@ -7073,7 +7077,17 @@ func_mode_link ()
+ 		  fi
+ 		  ;;
+ 		*)
+-		  path="-L$absdir/$objdir"
 +                  # OE sets installed=no in staging. We need to look in $objdir and $absdir, 
 +                  # preferring $objdir. RP 31/04/2008
 +                  if test -f "$absdir/$objdir/$depdepl" ; then