pgsql-server: Fix psql's COPY support to deal with \r\n line endings.

Log Message:
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Fix psql's COPY support to deal with \r\n line endings.
Andrew Dunstan, some further hacking by Tom Lane.

Modified Files:
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pgsql-server/src/bin/psql:
copy.c (r1.51 -> r1.52)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/psql/copy.c.diff?r1=1.51&r2=1.52)