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
..
2013-02-22 16:56:55 -03:00
2013-02-22 16:56:55 -03:00
2013-02-22 16:56:55 -03:00