Stop referring to 8.4 as though it were current

In passing, clear up some comments.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=d7f0318ca6eae18afc1867b22db45299818e9581

Modified Files
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src/slonik/slonik.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)