pgstatsinfo - pg_statsinfo: Bugfixes.

Log Message:
-----------
Bugfixes.
- Make new daemons launched by restart() to parse correct csvlog files.
- alert() should not use an already-free'ed variable.
- Adjust alert() to use ALERT message level rather than WARNING.
- Fix double-PQclear for error cases.
- Improve documentation about the error level.

Modified Files:
--------------
    pg_statsinfo/bin:
        logger.c (r1.17 -> r1.18)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/logger.c?r1=1.17&r2=1.18)
        snapshot.c (r1.13 -> r1.14)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/snapshot.c?r1=1.13&r2=1.14)
        writer.c (r1.13 -> r1.14)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/writer.c?r1=1.13&r2=1.14)
    pg_statsinfo/bin/pgut:
        pgut.c (r1.11 -> r1.12)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/pgut/pgut.c?r1=1.11&r2=1.12)
    pg_statsinfo/doc:
        pg_statsinfo-ja.html (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/pg_statsinfo-ja.html?r1=1.6&r2=1.7)