Updates of SE-PostgreSQL 8.4devel patches (r1076)

I updated the following SE-PostgreSQL patches:

[1/5] http://sepgsql.googlecode.com/files/sepostgresql-sepgsql-8.4devel-3-r1076.patch
[2/5] http://sepgsql.googlecode.com/files/sepostgresql-pg_dump-8.4devel-3-r1076.patch
[3/5] http://sepgsql.googlecode.com/files/sepostgresql-policy-8.4devel-3-r1076.patch
[4/5] http://sepgsql.googlecode.com/files/sepostgresql-docs-8.4devel-3-r1076.patch
[5/5] http://sepgsql.googlecode.com/files/sepostgresql-tests-8.4devel-3-r1076.patch

- Patches are rebased to the latest CVS HEAD.
- Improvement of performance penalty for access checks.  Reworks in access vector chache enables to reduce performance
loss,as follows:    http://kaigai.sakura.ne.jp/sblo_files/kaigai/image/080930_sepgsql_performance.png  It shows about
8%loss in maximum, and larger scale database give us  smaller losses in trend.
 
- Add a hook to check permission on "COPY TO/FROM <file>".  In the previous version, SE-PostgreSQL does not check
permissions to the file used in COPY statement. It is fixed.
 
- Documentation updates  - Descriptions for build & install are reworked, because most of    security policy for
SE-PostgreSQLnow got merged into the upstream    selinux-policy package.  - Add a "Limitation" section to describe
aboutcovert channel and    reference integrity.
 

Thanks,
-- 
OSS Platform Development Division, NEC
KaiGai Kohei <kaigai@ak.jp.nec.com>