Setting PERL_UNICODE breaks everything

[andersk]

Someone on IRC had a funny environment variable set that breaks mosh like this:

$ PERL_UNICODE=S mosh linerva
Wide character in print at /usr/lib/perl/5.14/IO/Handle.pm line 210.
padding error: need 958 block 8 mod 6
Disconnecting: Packet corrupt
/usr/bin/mosh: Did not find mosh server startup message.

I’m not sure it’s reasonable to expect mosh to behave sanely under such a crazy environment, but we should see what we can do about being more robust or printing a better error.

[keithw]

I applied ddrown's patch.