Apologies for multiple email threads, as this message was sent before
my other email and before adding my account to this list. This bug
report is slightly misleading, as the --locale option is not ignored
by initdb.exe, but is misinterpreted in certain cases.
See email thread: "initdb.exe changes --locale option"
http://archives.postgresql.org/pgsql-bugs/2012-09/msg00083.php
-Mike