Add .fromPath constructors to File and Directory.

runtime/bin/directory.dart

Index: runtime/bin/directory.dart
diff --git a/runtime/bin/directory.dart b/runtime/bin/directory.dart
index 1fd96c9f222b1ee75868625c01641f8a439d9847..60e6bfd566ba9cb86ff9d2caca6346127841f604 100644
--- a/runtime/bin/directory.dart
+++ b/runtime/bin/directory.dart
@@ -7,13 +7,20 @@
  */
 interface Directory default _Directory {
   /**
-   * Creates a directory object. The path is either a full path or
-   * relative to the directory in which the Dart VM was
-   * started.
+   * Creates a directory object. The path is either an absolute path,
+   * or it is a relative path which is interpreted relative to the directory
+   * in which the Dart VM was started.
    */
   Directory(String path);
 
   /**
+   * Creates a directory object from a Path object. The path is either
+   * an absolute path, or it is a relative path which is interpreted
+   * relative to the directory in which the Dart VM was started.
+   */
+  Directory.fromPath(Path path);

[Søren Gjesse, 2012/06/22 08:06:12]

I know that it would be a breaking change, but shouldn't we consider to have
this one be the default one and rename the other to Directory.fromString. Or
just get rid of it, as one can always do

  new Directory(new Path(str))

[Bill Hesse, 2012/06/22 10:35:33]

I'd like to make breaking changes once we are more confident about how usable
the Path library is.

On 2012/06/22 08:06:12, Søren Gjesse wrote:

+
+  /**
    * Creates a directory object pointing to the current working
    * directory.
    */