export PYTHONIOENCODING=UTF8 in test runner
utf8 stdin/stdout in interact and echo_w_prompt
Display locale in tools/display-terminalinfo.py
move locale display before try-clause for non-ttys
export LANG=en_US.UTF-8 in teamcity-runtests.sh
revert echo/interact sub-proc UTF8 wrappers
Merge pull request #154 from pexpect/resolve-eof-unicode-osx-sunos

Resolve EOF error in test_interact.py for OSX and SunOs
Add requirements file for docs build