Clarify namespace setup in documentation

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=55194fbab4fcd9c8ec5b2b9c1091839dc6a1fa12
Author: Rose Nancy <rnancy at afilias.info>

Modified Files
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doc/adminguide/ddlchanges.sgml |    4 ++++
1 file changed, 4 insertions(+)