input: [Field] UpdatePoMakefile [Value] 
output: A boolean value. If true, the file Makefile.in.in in the subdirectory po is replaced with a patched version. This happens in the patch phase and before the PatchScript is run. The patched version respects DESTDIR and makes sure that message catalogs end up in /sw/share/locale, not /sw/lib/locale. Before using this field, make sure that you won't break the package and that it's really required. You can run diff to find the differences between the package's version and Fink's version (in /sw/lib/fink/update).