BUG #6304: initdb fails with loale ko_KR.eucKR

The following bug has been logged online:

Bug reference:      6304
Logged by:          Robert Balser
Email address:      robert.balser@hp.com
PostgreSQL version: 9.0.5
Operating system:   HPUX 11.31 ia64
Description:        initdb fails with loale ko_KR.eucKR
Details:

If you set your LANG=ko_KR.eucKR to set your locale to Korean, the initdb
command fails.  It works with other locales, e.g. various Japanese, Chinese,
and even other Korean locales (e.g. ko_KR.utf8).  But ko_KR.eucKR always
fails.  The command being invoked is:

initdb -E UTF8 --no-locale -D <DB_DIR> -U <USER> --pwfile=<PASSWORDFILE>

The output of initdb is an "sh:" error (in Korean), followed by a "fgets
failure:" (also Korean), and then the following in English:

The program "postgres" is needed by initdb but was not found in the same
directory as "<PGDIR>/bin/initdb".  Check your installation.

The postgres binary is of course in that folder, hence working with other
locales.