pgsql: Remove DOS line endings ("\r\n") from several .po files.

Log Message:
-----------
Remove DOS line endings ("\r\n") from several .po files. DOS line endings
are inconsistent with the rest of the .po files, and apparently cause
problems for Sun's cc. Per report on IRC from "bitvector2".

Tags:
----
REL7_4_STABLE

Modified Files:
--------------
    pgsql/src/bin/pg_controldata/po:
        zh_CN.po (r1.2 -> r1.2.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_controldata/po/zh_CN.po.diff?r1=1.2&r2=1.2.2.1)
    pgsql/src/bin/pg_resetxlog/po:
        zh_CN.po (r1.2 -> r1.2.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_resetxlog/po/zh_CN.po.diff?r1=1.2&r2=1.2.2.1)
    pgsql/src/bin/psql/po:
        zh_CN.po (r1.3 -> r1.3.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/po/zh_CN.po.diff?r1=1.3&r2=1.3.2.1)
    pgsql/src/interfaces/libpq/po:
        zh_CN.po (r1.3 -> r1.3.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/po/zh_CN.po.diff?r1=1.3&r2=1.3.2.1)