Remove the new libtool detection method to avoid config failure. Poky's libtool
has different format for "aclocaldir", and there is no elegant parsing method,
so fall back to old detection.

Signed-off-by: Zhai Edwin <edwin.zhai@intel.com>

Index: apr-1.4.2/buildconf
===================================================================
--- apr-1.4.2.orig/buildconf	2009-11-13 06:19:49.000000000 +0800
+++ apr-1.4.2/buildconf	2010-11-29 14:39:19.000000000 +0800
@@ -50,14 +50,6 @@
 
 if [ -f libtool.m4 ]; then 
    ltfile=`pwd`/libtool.m4
-elif grep all_pkgmacro_files $libtoolize > /dev/null; then
-    # libtool 2.x
-   aclocal_dir=`sed -n '/^aclocaldir=/{s/.*=//;p;q;}' < $libtoolize`
-   ltfiles=`sed -n '/^all_pkgmacro_files=/{s/.*=//;;s/"//;p;q;}' < $libtoolize`
-   for f in $ltfiles; do
-       test -f "$aclocal_dir/$f" && cp "$aclocal_dir/$f" build
-   done
-   ltfile=$aclocal_dir/libtool.m4
 else
    ltfindcmd="`sed -n \"/=[^\\\`]/p;/libtool_m4=/{s/.*=/echo /p;q;}\" \
                    < $libtoolize`"