Added overload of `applyCwd()` that takes and returns an `Iterable<File<`. Added new function `searchPaths()`.
Added overload of `applyCwd()` that takes and returns an `Iterable<File<`.
Added new function `searchPaths()`.

ceylon/ceylon-common,ceylon/ceylon-common,ceylon/ceylon-common,jvasileff/ceylon-common,jvasileff/ceylon-common,jvasileff/ceylon-common