Update rake 10.2.2 -> 10.3.1

10.3.1 / 2014-04-17

Bug fixes:

Really stop reporting an error when cleaning already-deleted files.

Fixed infinite loop when cleaning already-deleted files on windows.

10.3 / 2014-04-15

Enhancements:

Added –build-all option to rake which treats all file prerequisites as
out-of-date.

Added Rake::NameSpace#scope.

Bug fixes:

Suppress org.jruby package files in rake error messages for JRuby users.

Fixed typo, removed extra “h”.

Rake no longer reports an error when cleaning already-deleted files.

Consume stderr while determining CPU count to avoid hang.

Change-Id: I173ba072b33295834104c779f13d4febaa9dbc60