Hello,
There are some updates out for CustomBuild, though the update of Libtool fails.
# ./build update_versions
Updating libtool
File already exists: libtool-2.2.6a.tar.gz
MD5 Checksum on libtool-2.2.6a.tar.gz passed.
Found /usr/local/directadmin/custombuild/libtool-2.2.6a.tar.gz...