pgsql: Update copyrights for 2013 - Mailing list pgsql-committers

Update copyrights for 2013

Fully update git head, and update back branches in ./COPYRIGHT and
legal.sgml files.

Branch
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REL9_1_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/93d83938fd452dd7143760ad132aa9d90c5b45e5

Modified Files
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COPYRIGHT               |    2 +-
doc/src/sgml/legal.sgml |    4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)