Log Message:
-----------
Move pl/proxy into Multi-server parallel query execution documentation
section.
Modified Files:
--------------
pgsql/doc/src/sgml:
high-availability.sgml (r1.21 -> r1.22)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/high-availability.sgml?r1=1.21&r2=1.22)