Add introduction to ARMv6 section.


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45788 c2e8774f-c49f-e111-b436-862b2bbc8956
Use &os; instead of FreeBSD.


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45789 c2e8774f-c49f-e111-b436-862b2bbc8956
Whitespace cleanup, translators please ignore.


git-svn-id: svn+ssh://svn.freebsd.org/doc/head@45790 c2e8774f-c49f-e111-b436-862b2bbc8956