input: [Field] UpdateLibtoolInDirs [Value] 
output: Introduced in a post-0.9.0 CVS version. A list of subdirectories. This does the same as UpdateLibtool, but is useful for packages that have outdated libtool 1.3.x scripts in several directories throughout the source tree. Previously you had to copy/move the files there manually in the PatchScript. With this new field you can just list the directories. Use . to update files in the build directory itself.