BUG #11014: Postgres can be put into an error state by setting invalid timezone.

The following bug has been logged on the website:

Bug reference: 11014
Logged by: Duncan Gillis
Email address: dgillis(at)dystillr(dot)com
PostgreSQL version: 9.4beta1
Operating system: Ubuntu 13.04; Ubuntu 14.04
Description:

psql (9.4beta1)
Type "help" for help.

postgres=#
postgres=#
postgres=# show timezone;
TimeZone
----------
UTC
(1 row)

postgres=#
postgres=#
postgres=# set timezone='-0400';
SET
postgres=#
postgres=# show timezone;
TimeZone
----------
unknown
(1 row)

postgres=# select now();
The connection to the server was lost. Attempting reset: Failed.
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