Add support for glibtoolize of Mac OS X
diff --git a/autogen.sh b/autogen.sh
index cb3887a..3292973 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,6 +1,11 @@
 #!/bin/sh
+gprefix=`which glibtoolize 2>&1 >/dev/null`
+if [ $? -eq 0 ]; then 
+  glibtoolize --force
+else
+  libtoolize --force
+fi
 aclocal -I m4
-libtoolize
 autoheader
 automake --add-missing
 autoconf