- 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

Set the hint for physical address of RSDP in hexadecimal as before r223262.

Fix clang warnings.

Approved by: philip (mentor)

Remove support for autoloading ACPI from the loader. Leave in the code to
detect ACPI and export info such as the location of the RSDP via hints as
that is still useful.

Don't warn about an RSDP with a corrupt checksum. The kernel does a better
job about warning about these things later and this message can be
confusing.

Submitted by: infofarmer
MFC after: 1 week

Import ACPICA 20090521.

Catch up with ACPI-CA 20070320 import.

Use PTOV() to convert physical addresses to appropriate virtual addresses
in the loader when searching for the ACPI RSDP. (The loader runs in a flat
mode with va 0 == pa 0xa000.)

Extend a local buffer to prevent an overflow of the XSDT address.

Submitted by: Joerg Sonnenberger
Obtained from: DragonflyBSD
MFC after: 1 day

Use the correct location of the EBDA for searching for the RSDP.
The EBDA is the 1 KB area addressed by the 16 bit pointer at 0x40E.

Pointed out by: robert.moore AT intel.com

Fix a potential stack buffer overflow on systems whose ACPI OEMID
fills its field (6 characters). In that case the OEMID is not
null-terminated, and the sprintf that was used would copy up to the
next null byte, which could be pretty far away.

Use __FBSDID().
Also some minor copyright style cleanups.

Null terminate the OEM hint. This rids my laptop of the smiley face that
would follow the 6 valid chars of the table entry.

Add include file so this builds with new acpica

Reported by: Kevin Oberman <oberman@es.net>

Support functions for the new ACPI import.
* AcpiOsDerivePciId(): finds a bus number, given the slot/func and the
acpi parse tree.
* AcpiOsPredefinedOverride(): use the sysctl hw.acpi.os_name to
override the value for _OS.

Ideas from: takawata, jhb
Reviewed by: takawata, marcel
Tested on: i386, ia64

Resolve conflicts arising from the ACPI CA 20020611 import.

Fix a build problem for the ACPI CA 20020404 import.
Add definition of COMPILER_DEPENDENT_INT64 and also
fix definition of COMPILER_DEPENDENT_UINT64.

Pointed-out by: Michael Nottebrock <michaelnottebrock@gmx.net>

Teach the loader how to find the system ACPI information, and autoload
the ACPI module if the system apperars to be ACPI compliant.

This is an initial cut; the load should really be done by Forth support
code, and we should check both the BIOS build date and a blacklist.