Log Message:
-----------
Revert COPY OUT to follow the pre-8.3 handling of ASCII control characters,
namely that \r, \n, \t, \b, \f, \v are dumped as those two-character
representations rather than a backslash and the literal control character.
I had made it do the other to save some code, but this was ill-advised,
because dump files in which these characters appear literally are prone to
newline mangling. Fortunately, doing it the old way should only cost a few
more lines of code, and not slow down the copy loop materially.
Per bug #3795 from Lou Duchez.
Modified Files:
--------------
pgsql/src/backend/commands:
copy.c (r1.289 -> r1.290)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/copy.c?r1=1.289&r2=1.290)
