Fix some comment typos

When Who What
2016-01-15 04:21:10 David Rowley (davidrowley) Closed in commitfest 2016-03 with status: Committed
2016-01-15 04:21:02 David Rowley (davidrowley) Changed committer to rhaas
2016-01-06 16:25:48 Magnus Hagander (mha) Detached mail thread CAG9n48_CoXd-8+nU6ri=Ht5pUD47JALyfCp=ztmcdoYcUvHLcA@mail.gmail.com
2016-01-06 16:25:38 Magnus Hagander (mha) Added annotation "This is just a test, ignore it" to CAHg_5gp0pRjKCys=86UFXcxtt6xHw8pN4WB0-Ccxs20+gcqvGw@mail.gmail.com
2016-01-06 16:25:22 Magnus Hagander (mha) Attached mail thread CAG9n48_CoXd-8+nU6ri=Ht5pUD47JALyfCp=ztmcdoYcUvHLcA@mail.gmail.com
2016-01-05 23:30:55 David Rowley (davidrowley) Changed authors to David Rowley (davidrowley)
2016-01-05 23:30:17 David Rowley (davidrowley) Attached mail thread CAKJS1f-AGgQaurTwhY=wkJjspgDcmDUE8Yx03XTXCDz=kae-Zw@mail.gmail.com
2016-01-05 23:30:17 David Rowley (davidrowley) Created patch record