pgstatsinfo - pg_statsinfo: Fix some comments typo and Add some - Mailing list pgsql-committers

Log Message:
-----------
Fix some comments typo and Add some comments.

Modified Files:
--------------
    pg_statsinfo:
        COPYRIGHT (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/COPYRIGHT?r1=1.1&r2=1.2)
    pg_statsinfo/bin:
        collector.c (r1.15 -> r1.16)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/collector.c?r1=1.15&r2=1.16)
        logger.c (r1.26 -> r1.27)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/logger.c?r1=1.26&r2=1.27)
        pg_statsinfo.c (r1.16 -> r1.17)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/pg_statsinfo.c?r1=1.16&r2=1.17)
        writer.c (r1.17 -> r1.18)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/writer.c?r1=1.17&r2=1.18)