Document that pg_upgrade requires PGHOST be set for any pre-9.1 servers
with a socket directory mismatch with the new server.
Backpatch to 9.2.
Branch
------
master
Details
-------
http://git.postgresql.org/pg/commitdiff/00a8eb61a254f620dbf4ba5de2f33831f159cdeb
Modified Files
--------------
doc/src/sgml/pgupgrade.sgml | 9 ++++-----
1 files changed, 4 insertions(+), 5 deletions(-)