Alvaro Herrera 4591933549 Fix some typos and grammatical mistakes
... as well a update copyrights statements to 2013.

Noted by Thom Brown and Peter Geoghegan
2013-02-22 18:52:59 -03:00
..
2012-06-13 20:03:02 -04:00
2011-03-28 22:56:52 +03:00
2008-08-21 20:15:31 +00:00