Delete flow#clear spec

This spec doesn't provide any value...it just tests that, if you call
flow.clear with a block, that you called flow.clear with a block.
Fix RSpec 3 deprecations for argument validation
Go  rspec3
Symbols are now always treated as metadata keys
should --> expect in the url_spec

* as it relied on the monkey patched should and there are
  scopring issues I resorted to a global variable... which
  I shouldn't but a better solution did not come up and it
  seemed kind of pragmatic...
Convert mocks/stubs to RSpec 3.0.0.rc1 syntax with Transpec

Some specs didn't translate well. See
spec/swt_shoes/shared_examples/clickable.rb for the big one

This conversion is done by Transpec 2.1.0 with the following command:
    transpec "--rspec-command=rake spec" --keep=its

* 126 conversions
    from: obj.stub(:message)
      to: allow(obj).to receive(:message)

* 96 conversions
    from: obj.should_receive(:message)
      to: expect(obj).to receive(:message)

* 33 conversions
    from: obj.stub(:message => value)
      to: allow(obj).to receive_messages(:message => value)

* 7 conversions
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)

* 4 conversions
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

* 3 conversions
    from: Klass.any_instance.stub(:message)
      to: allow_any_instance_of(Klass).to receive(:message)

* 2 conversions
    from: obj.unstub(:message)
      to: allow(obj).to receive(:message).and_call_original

* 1 conversion
    from: Klass.any_instance.stub(:message => value)
      to: allow_any_instance_of(Klass).to receive_messages(:message => value)

* 1 conversion
    from: Klass.any_instance.unstub(:message)
      to: allow_any_instance_of(Klass).to receive(:message).and_call_original

See also: https://github.com/yujinakayama/transpec#supported-conversions
Revert a spec whose upgrade made it fail
Fixing most of the eventually errors by explicitly specifying Exception
Made the spec work SOMETIMES again... higher timeout does not help #681
Update input_box to use instance_of? instead of class ==

* cleaner implementation
* works around rspec stacklevel too deep, see
  rspec/rspec-mocks#687
include RSpec::Matchers to make DSL available in URL class

* gets rid of $global -jay
* thanks @myronmarston for pointing this out! =)
The new hash and different dsls seemed to cause the failures
Use spies instead of mocks in clickable specs

* dunno how the specs before ever worked since there were
  different values passed around
* spies save us the trouble of different values by asking after
  it happened with the most current values
Merge pull request #729 from shoes/rspec3

Update rspec to rspec 3.rc1