small fix to libtool check

buildconf

@@ -43,19 +43,20 @@ else
     fi
 
     # libtool 1.2f or newer
-    lt_version=`libtool --version 2>/dev/null|sed -e 's/^[^0-9]*//' -e 's/\([a-z]\).*/.\1/'`
-    if test "$lt_version" = ""; then
+    lt_pversion=`libtool --version 2>/dev/null|sed -e 's/^[^0-9]*//' -e 's/ .*//'`
+    if test "$lt_pversion" = ""; then
 	echo "buildconf: libtool not found."
 	echo "           You need libtool version 1.3 or newer installed"
 	echo "           to build PHP from CVS."
 	exit 1
     fi
+    lt_version=`echo $lt_pversion|sed -e 's/\([a-z]*\)$/.\1/'`
     IFS=.; set $lt_version; IFS=' '
     if test "$1" -gt "1" || test "$2" -ge "3" || test "$2" = "2" -a "$3" = "f"
     then
-	echo "buildconf: libtool version $lt_version (ok)"
+	echo "buildconf: libtool version $lt_pversion (ok)"
     else
-	echo "buildconf: libtool version $lt_version found."
+	echo "buildconf: libtool version $lt_pversion found."
 	echo "           You need libtool version 1.2f or newer installed"
 	echo "           to build PHP from CVS."
 	exit 1