- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC vt(4) mouse cursor improvements from dumbbell:

r270269:

vt(4): Handle global and per-window mouse cursor toggle in one place

Before the global flag was set/unset using the CONS_MOUSECTL ioctl,
and the per-window flag through the MOUSE_SETLEVEL or MOUSE_SETMODE
ioctls.

Also, if the cursor is already enabled/disabled, return immediatly.
This avoids to reset the cursor's position to the center of the
screen.

This matches syscons' behavior.

While here, remove a trailing space and a redundant variable
declaration.

r270271:

vt(4): Mark cursor old position as dirty before reading the dirty area

Otherwise, the redraw is done during the next vt_flush run.

r270272:

vt(4): If the cursor is globally disabled, don't mark its position as dirty

This avoids unnecessary redraw. In particular, during boot, where the
cursor is disabled and its fake position is [0;0], this triggered a
refresh of the whole screen each time vt_flush() is called.

r270273:

vt(4): If the cursor didn't move, don't mark its position as dirty

Currently, this has no effect, because the cursor is always redrawn
anyway. But this will be useful after improvements to the
vd_bitbltchr_t callback API.

The vt_device structure members used to store the position of the
cursor as of the last redraw are renamed from vd_mdirty{x,y} to
vd_mold{x,y}. The associated comment is fixed too. Also, their value
is now expressed in pixels, not in character columns/row.

r270275:

vt(4): Mark the current cursor position as dirty

Like r270273, this has no effect for now, because the cursor is always
drawn. This is in preparation of future changes to vd_bitbltchr_t API.

r270278:

vt(4): Mark cursor position as dirty when we enable/disable it

Sponsored by: The FreeBSD Foundation

267622 Log:
Rename vt(4) vga module to dismiss interference with syscons(4) vga module.
267623 Log:
Remove stale link to deleted vt(4) xboxfb driver.
267624 Log:
syscons(4) and vt(4) can be built together now.
267625 Log:
Allow to disable syscons(4) if "hw.syscons.disable" kenv is set.
267626 Log:
Suspend vt(4) initialization if "kern.vt.disable" kenv is set.
267965 by emaste@ Log:
Use a common tunable to choose between vt(4)/sc(4)
With this change and previous work from ray@ it will be possible to put
both in GENERIC, and have one enabled by default, but allow the other to
be selected via the loader.
(The previous implementation had separate kern.vt.disable and
hw.syscons.disable tunables, and would panic if both drivers were
compiled in and neither was explicitly disabled.)
268175 by emaste@ Log:
Fix vt(4) detection in kbdcontrol and vidcontrol
As sc(4) and vt(4) coexist and are both enabled in GENERIC, the existence
of a vt(4) sysctl is not sufficient to determine that vt(4) is in use.
Reported by: Trond Endrestøl
268045 by emaste@ Log:
Add vt(4) to GENERIC and retire the separate VT config
vt(4) and sc(4) can now coexist in the same kernel. To choose the vt
driver, set the loader tunable kern.vty=vt .

Sponsored by: The FreeBSD Foundation

MFC 262785 263183 264182 264999 265391 265392 265395 265397 265398 265402 265403
265442 265546 265680 265681 265719 265862 265864 265867 265927 266010 266495
266540 266835 266856 266861 266862 267007 267310.

265391
Define a new method for probing vt(4) driver before attach it at early stage.
265392
Create dataset for vt(4) drivers.
265395
Set of updates to vt(4) core part.
o Declare vt(4) drivers dataset.
o Create single static structures for all early drivers.
o Add vt(4) to be by default in the kernel consoles list.
o Create one more sysinit point, to be able to initialize memory and lock
requirement of early drivers.
o Implement early drivers select. (Only best available will be selected).
o Fix one missed "return (0)" for VTYLOCK.
o Improve locking for cases when one driver replace another.
o Make driver replacement notification less debug-look-like.
o Minor spell fixes.
265397
Switch fb and efifb drivers to use names and new vt(4) driver probe method.
265398
Add vt(4) driver name for ofwfb driver.
265402
Revert r264997 and r265026. It is not required anymore.
265403
Switch vga drivers to use names and new vt(4) driver probe method.
265442
Implement KDMKTONE ioctl.
265546
Fix possible divide by zero.
265680
No need to assign fields required and checked on probe.
265681
Fix scrollback.
265719
Hide debug messages under VT_DEBUG.
265927
Update terminal sizes in any case when new vt(4) driver arrive.
(Plus remove one unused newline)
266010
Remove extra newlines.
No functional changes.
266495
Fix tty locking.
o Correct expected values for VT_LOCKSWITCH ioctl.
o Check current window for locked state.
266540
Proper fix of VT_LOCKSWITCH ioctl.
266835
Remove driver as unused.
267007
Fix case when vt(4) started w/o driver assigned.
o Always init locks and cv ASAP.
o Initialize driver-independent parts even if driver probing fail.
o Allow to call vt_upgrade anytime, for later loaded drivers.
o New window flag VWF_READY, to track if window already initialized.
Other updates:
o Pass vd as a cookie for kbd_allocate.
o Do not blank window on driver replacement.

Sponsored by: The FreeBSD Foundation

MFC 259016,259019,259049,259071,259102,259110,259129,259130,259178,259179,
259203,259221,259261,259532,259615,259650,259651,259667,259680,259727,
259761,259772,259776,259777,259830,259882,259915,260160,260449,260450,
260688,260888,260953,261269,261547,261551,261552,261553,261585:
Merge the vt(4) driver (newcons) to stable/10.

Approved by: ray

Merge VT(9) project (a.k.a. newcons).

Reviewed by: nwhitehorn
MFC_to_10_after: re approval

Sponsored by: The FreeBSD Foundation

Notify terminal about process on current terminal start to use mouse on a
different "mouse level".

Sponsored by: The FreeBSD Foundation

Move vt_mouse_event out of sysmouse lock.

Sponsored by: The FreeBSD Foundation

o Remove include of sys/mouse.h, it is included from vt.h now.
o Call vt_mouse_event method, to notify VT(9) about mouse events.
o Add empty MOUSE_MOUSECHAR ioctl handler.
o Remove trailing whitespace.

Sponsored by: The FreeBSD Foundation

MFC @r256953

Readd the vt(4) driver and corresponding tools.