upgrade docs: highlight pg_upgrade, warn about globals preservation

Bruce Momjian <bruce@momjian.us>

Commit: 3a3d3f9ec01f1f7333e3bbcd5ba9398fd19ad8d9
Author: Bruce Momjian <bruce@momjian.us>
Date: 2014-08-25T19:35:35Z
Releases: 9.4.0
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