pgstatsinfo - pg_statsinfo: Add English internal documentation.

Log Message:
-----------
Add English internal documentation.
Recomment "ident" authentification in the doc.
Use GUC_complaint_elevel(source) instead of FATAL.
Fix an out-of-sync-log bug after restart().

Modified Files:
--------------
pg_statsinfo/bin:
logger.c (r1.18 -> r1.19)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/bin/logger.c?r1=1.18&r2=1.19)
pg_statsinfo/doc:
pg_statsinfo-internal-ja.html (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/pg_statsinfo-internal-ja.html?r1=1.1&r2=1.2)
pg_statsinfo-ja.html (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/pg_statsinfo-ja.html?r1=1.7&r2=1.8)
pg_statsinfo-warm-standby-ja.html (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/pg_statsinfo-warm-standby-ja.html?r1=1.1&r2=1.2)
pg_statsinfo.html (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/pg_statsinfo.html?r1=1.4&r2=1.5)
pg_statsinfo/doc/image:
pg_statsinfo-ja.png (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/image/pg_statsinfo-ja.png?r1=1.1&r2=1.2)
pg_statsinfo/lib:
libstatsinfo.c (r1.16 -> r1.17)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/lib/libstatsinfo.c?r1=1.16&r2=1.17)

Added Files:
-----------
pg_statsinfo/doc:
pg_statsinfo-internal.html (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/pg_statsinfo-internal.html?rev=1.1&content-type=text/x-cvsweb-markup)
pg_statsinfo/doc/image:
pg_statsinfo.png (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_statsinfo/doc/image/pg_statsinfo.png?rev=1.1&content-type=text/x-cvsweb-markup)