pgsql: Update release notes for 9.2.2, 9.1.7, 9.0.11, 8.4.15, 8.3.22.

Update release notes for 9.2.2, 9.1.7, 9.0.11, 8.4.15, 8.3.22.

Branch
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REL9_0_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/bf274683b70a0642d359da886d72f0685e01d752

Modified Files
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doc/src/sgml/release-8.3.sgml | 296 ++++++++++++++++++++++++++++++++
doc/src/sgml/release-8.4.sgml | 302 ++++++++++++++++++++++++++++++++
doc/src/sgml/release-9.0.sgml | 378 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 976 insertions(+), 0 deletions(-)

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