upgrade docs: highlight pg_upgrade, warn about globals preservation

Bruce Momjian <bruce@momjian.us>

Commit: bf1c866597a0e59a30b13a66f3ae505655b61853
Author: Bruce Momjian <bruce@momjian.us>
Date: 2014-08-25T19:34:55Z
Releases: 9.5.0
upgrade docs:  highlight pg_upgrade, warn about globals preservation

Also, remove OID preservation mention, mention non-text dump formats

Backpatch through 9.4

Files

PathChange+/−
doc/src/sgml/backup.sgml modified +15 −12
doc/src/sgml/runtime.sgml modified +29 −18