pgsql: In psql, rename trans_* variables to translate_*, for clarity.

Log Message:
-----------
In psql, rename trans_* variables to translate_*, for clarity.

Modified Files:
--------------
    pgsql/src/bin/psql:
        describe.c (r1.176 -> r1.177)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/describe.c?r1=1.176&r2=1.177)
        large_obj.c (r1.50 -> r1.51)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/large_obj.c?r1=1.50&r2=1.51)
        print.c (r1.108 -> r1.109)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/print.c?r1=1.108&r2=1.109)
        print.h (r1.37 -> r1.38)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/print.h?r1=1.37&r2=1.38)
    pgsql/src/bin/scripts:
        createlang.c (r1.29 -> r1.30)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/scripts/createlang.c?r1=1.29&r2=1.30)
        droplang.c (r1.26 -> r1.27)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/scripts/droplang.c?r1=1.26&r2=1.27)