[erlang-patches] Disable flow control for beam started via run_erl

[Henrik Nord]

Hi

This branch has been long overdue for a review sense it was submitted 
over a year ago

Here are the things that we would like to see done before it is included 
in 'dev'

* RUN_ERL_DISABLE_FLOWCNTRL needs to be documented.
* In the error messages, "terminals" should be changed to "terminal's".

Thank you for your patience and contribution!

-- 
/Henrik Nord Erlang/OTP