Document r268351, end of ia64 support.

Sponsored by:	The FreeBSD Foundation
Drop leading 'r' in revision number from previous commit.

Sponsored by:	The FreeBSD Foundation
Document r268303, MacMini 3,1 support in asmc(4).

Sponsored by:	The FreeBSD Foundation
Document r267359, disklabel64 partitioning scheme.

Sponsored by:	The FreeBSD Foundation
Fix non-version text after .Fx macro usage.

Sponsored by:	The FreeBSD Foundation
Document r266770, Intel Centrino Wireless-N 105 support.

Sponsored by:	The FreeBSD Foundation
Document r266757, netmap(4) support for cxgbe(4).

Sponsored by:	The FreeBSD Foundation
Document r266531, IMAGACT_BINMISC enabled by default.
While here, fix a spacing nit from previous commit.

Sponsored by:	The FreeBSD Foundation
Sort by commit revision number.

Sponsored by:	The FreeBSD Foundation