Updated the IDL of FileAPI
Stressing the file constructor
Merge pull request #1217 from plehegar/plh/fileapi-update

Updated the IDL of FileAPI
Merge pull request #1218 from plehegar/plh/FileAPI-FileConstructor

Stressing the file constructor
Remove a test for window.CloseEvent that's covered by html/interfaces.html.
Update the CloseEvent tests for changed specifications.
Give CloseEvent/004.html a more useful file name.
Add a test for the historical initialization of CloseEvent.
Merge pull request #1221 from Ms2ger/CloseEvent

Improve the CloseEvent tests; r=zcorpan