minor fix to libtool 1.5.10

[Scott Michel]

${xdir} is missing from in front of $object, causing some builds to fail 
(if object dir is not the same as the source dir):

--- /usr/autotool/devel/share/libtool/ltmain.sh 2004-09-21 
23:50:51.001000000 -0700
+++ ltmain.sh   2004-11-01 10:47:59.411993900 -0800
@@ -903,7 +903,7 @@

       # Append the name of the PIC object to the libtool object file.
       test -z "$run" && cat >> ${libobj}T <<EOF
-pic_object='$objdir/$objname'
+pic_object='${xdir}$objdir/$objname'

 EOF

@@ -977,7 +977,7 @@
       # Only append if the libtool object file exists.
       test -z "$run" && cat >> ${libobj}T <<EOF
 # Name of the non-PIC object.
-non_pic_object='$objname'
+non_pic_object='${xdir}$objname'

 EOF
     else