Update run_loop

[krukow]

Correspond to

calabash/run_loop#82

@jmoody please assist in testing

[krukow]

I've done testing according to: #616 (comment)

With this pull request to run loop, calabash/run_loop#82, we get the following behavior (Note: tested on simulators so far, but devices shouldn't be different).

Ruby String	UIA Strategy	String entered on iOS keyboard
"karl's problem"	:host	karl's problem
"karl's problem"	:preferences	karl's problem
"karl's problem"	:shared_element	karl's problem
"karl's "problem""	:host	karl's "problem"
"karl's "problem""	:preferences	karl's "problem"
"karl's "problem""	:shared_element	karl's problem
"karl's \ problem"	:host	karl's \ problem
"karl's \ problem"	:preferences	karl's \ problem
"karl's \ problem"	:shared_element	karl's \ problem