pgsql: Rename pg_make_encrypted_password to PQencryptPassword.

Log Message:
-----------
Rename pg_make_encrypted_password to PQencryptPassword.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        libpq.sgml (r1.200 -> r1.201)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/libpq.sgml.diff?r1=1.200&r2=1.201)
    pgsql/src/bin/psql:
        command.c (r1.157 -> r1.158)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/command.c.diff?r1=1.157&r2=1.158)
    pgsql/src/bin/scripts:
        createuser.c (r1.25 -> r1.26)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/scripts/createuser.c.diff?r1=1.25&r2=1.26)
    pgsql/src/interfaces/libpq:
        exports.txt (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/exports.txt.diff?r1=1.6&r2=1.7)
        fe-auth.c (r1.109 -> r1.110)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-auth.c.diff?r1=1.109&r2=1.110)
        libpq-fe.h (r1.123 -> r1.124)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/libpq-fe.h.diff?r1=1.123&r2=1.124)