Improved cast method.

lib/modules/ADT.pmod/Interval.pike

lib/modules/ADT.pmod/Queue.pike

lib/modules/ADT.pmod/Relation.pmod/Binary.pike

lib/modules/ADT.pmod/Set.pike

lib/modules/ADT.pmod/Stack.pike

lib/modules/Geography.pmod/Position.pike

lib/modules/Locale.pmod/module.pmod

lib/modules/MIME.pmod/module.pmod

lib/modules/Parser.pmod/XML.pmod/Tree.pmod

lib/modules/Search.pmod/Utils.pmod

lib/modules/Stdio.pmod/FakeFile.pike