Change Details

``` pt_BR.ISO8859-1/books/handbook: Sync with en_US r52891 Approved by: ??? Obtained from: The FreeBSD Brazilian Portuguese Documentation Project Differential Revision: https://reviews.freebsd.org/D21090 ```

``` pt_BR.ISO8859-1/books/handbook: Sync with en_US r53138 Approved by: ??? Obtained from: The FreeBSD Brazilian Portuguese Documentation Project Differential Revision: https://reviews.freebsd.org/D21090 ```

``` pt_BR.ISO8859-1/books/handbook: Sync with en_US r52891r53138 Approved by: ??? Obtained from: The FreeBSD Brazilian Portuguese Documentation Project Differential Revision: https://reviews.freebsd.org/D21090 ```