Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Add entry for the "screen" program.

Use a default of 25 lines for xterm. This only affects the behaviour
over a serial line, because the terminal negotiations using ssh/telnet
does the right thing anyways.

Add entry for xterm-color

Add entries for "dumb" and "dialup" terminals, as the shell in HEAD
refuses to start if it does not find a matching entry for the terminal
type.

My impression is that this is a problem in the shell, because
at least on PicoBSD images, the shell itself coredumps.
Anyways, this is the quickest fix i can come up with.

MF4S: Syncronise with Luigi's work in -stable.