- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

Fix the following warning from clang trunk:

usr.sbin/dconschat/dconschat.c:163:65: error: format specifies type 'size_t' (aka 'unsigned int') but the argument has type 'off_t' (aka 'long long') [-Werror,-Wformat]
snprintf(buf, PAGE_SIZE, "\r\n[dconschat reset target(addr=0x%zx)...]\r\n", dc->reset);
~~^ ~~~~~~~~~
%llx

Silence this by casting dc->reset to intmax_t, and using the appropriate
length modifier. While here, wrap the line to a 80 character margin.

MFC after: 3 days

Include <sys/wait.h> and <signal.h> for wait() and kill().

Set the default escape character as described in the manpage of dconschat(8).
Fix a cut-and-paste error.

Spotted by: avatar
Approved by: re (rwatson)

- Add an option to change escape character.
- Use CTRL macro.
- Make target reset work on telnet port.
- Add a key bind to invoke kgdb on the terminal. (experimental)

Reset dc->paddr and dc->reset if we cannot read configuration ROM.

Clean up escape sequence handling and add support for
resetting target and suspending dconschat.

Add heuristics for smooth reconnection.

Discard backlog on GDB port when connected.

MFC after: 3 days

Fix typos in comments.

Use socklen_t where appropriate.

Invalidate dcons buffer address if the magic is wrong.

Use new eui64(3) functions to print EUI-64s and to allow access to nodes
by EUI-64 and name.

Reviewed by: simokawa

Normalize polling interval while the target is offline.

Increase MAXDEV up to 10.

Cosmetic change.

remove debug message.

Add dumb console driver and related bits.

dcons(4): very simple console and gdb port driver
dcons_crom(4): FireWire attachment
dconschat(8): User interface to dcons

Tested with: i386, i386-PAE, and sparc64.