docs: add mention of index swapping

Bruce Momjian <bruce@momjian.us>

Commit: b1cbd2b573edc690bdb75cf25fe31037c8126b2f
Author: Bruce Momjian <bruce@momjian.us>
Date: 2014-01-30T17:14:24Z
Releases: 9.4.0
docs:  add mention of index swapping

Backpatch to 9.3

Greg Smith

Files

PathChange+/−
doc/src/sgml/maintenance.sgml modified +20 −2
doc/src/sgml/ref/create_index.sgml modified +1 −1