Updated libxml2 download URL

build.sh

@@ -281,7 +281,7 @@ prepare_libxml()
     echo "Retrieving libxml2 (this may take a while)..." | tee -a $LOGFILE
     cd $ROOT/3rdparty || failure
     rm -f libxml2-sources-2.6.32.tar.gz >> $LOGFILE 2>&1 || failure
-    wget --passive-ftp ftp://xmlsoft.org/libxml2/libxml2-sources-2.6.32.tar.gz >> $LOGFILE 2>&1 || failure
+    wget --passive-ftp ftp://xmlsoft.org/libxml2/old/libxml2-sources-2.6.32.tar.gz >> $LOGFILE 2>&1 || failure
     tar -xzf libxml2-sources-2.6.32.tar.gz >> $LOGFILE 2>&1 || failure
     rm libxml2-sources-2.6.32.tar.gz >> $LOGFILE 2>&1 || failure
     # substitute old source tree