Add pg_upgrade check to make sure the user has full access permission in
the current directory;  if not, throw an error.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/bda27e502fe9a3e9c54f065e4bc1315c3f2a57d7

Modified Files
--------------
contrib/pg_upgrade/exec.c       |    5 +++++
contrib/pg_upgrade/pg_upgrade.c |    4 ----
2 files changed, 5 insertions(+), 4 deletions(-)

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Next:	From: Bruce Momjian	Date: 2011-05-16 15:23:00
	Subject: pgsql: Remove redundant privilege doc sentences.
Previous:	From: Bruce Momjian	Date: 2011-05-16 14:48:50
	Subject: pgsql: Allow pg_upgrade to honor libpq environment variables. Add 'loc