Require postgresql 8.2 (for array operators && and @>)

Setting tag PLCAPI-4.3-27

--This line, and those below, will be ignored--
Please write a changelog for this new tag in the section above
DIFF=========
Index: PLCAPI.spec
===================================================================
--- PLCAPI.spec	(.../tags/PLCAPI-4.3-26)	(révision 15270)
+++ PLCAPI.spec	(.../trunk)	(révision 15270)
@@ -28,7 +28,7 @@

 # We use set everywhere
 Requires: python >= 2.4
-Requires: postgresql postgresql-server postgresql-python
+Requires: postgresql >= 8.2, postgresql-server >= 8.2, postgresql-python >= 8.2
 Requires: python-psycopg2
 Requires: python-pycurl
 Requires: httpd