Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Merge ACPICA 20110112. Switch to BSD/GPLv2 dual license[1].

Discussed with: core [1]

Merge ACPICA 20100915.

Merge ACPICA 20100331 (and four additional upstream patches).

Merge ACPICA 20100121.

Rewrite OsdSynch.c to reflect the latest ACPICA more closely:

- Implement ACPI semaphore (ACPI_SEMAPHORE) with condvar(9) and mutex(9).
- Implement ACPI mutex (ACPI_MUTEX) with mutex(9).
- Implement ACPI lock (ACPI_SPINLOCK) with spin mutex(9).

Clean up FreeBSD-specific header file:

- Define ACPI_USE_DO_WHILE_0 to add do while(0) around return_*() macros.
- Define __cdecl only for user land. It will never be used in kernel.
- Remove __cli() and __sti(). They were deprecated long ago.

Import ACPICA 20090521.

Canonify include paths again.

MFV: ACPICA 20090521

Import ACPICA 20090521 (with three patches from ACPICA GIT).

Temporarily revert system includes fixups to make future import easier.

Restore directory structures from actual vendor distribution.

flatten acpica vendor area

do it for current ('dist') and previous versions;
disable keywords expansion at the same time

Reviewed by: attilio
Approved by: rpaulo

Add fixes for FreeBSD build that were submitted upstream.

Vendor import of Intel ACPI-CA 20070320

Vendor import of Intel ACPI-CA 20051021

Vendor import of Intel ACPI-CA 20041119 with system includes fixups.

Vendor import of Intel ACPI-CA 20040527

Vendor import of Intel ACPI-CA 20040514.

Vendor import of ACPICA 20040220

ACPICA import from the 0619 dist.

Import of Intel ACPI 20030228 vendor distribution

Vendor import of the Intel ACPI CA 20020815 drop.

Vendor import of the Intel ACPI CA 20020725 drop.

Vendor import of the Intel ACPI CA 20020217 drop.

Import the 20010518 Intel ACPI CA release. Note that Intel's directory layout
keeps changing, so to reduce repository thrash everything has been moved into
a single directory. (repo copy involved)

Update to the 20010125 ACPI CA snapshot.

Update to the Intel 20001215 ACPI CA snapshot.

Update to the 20001115 Intel ACPI CA snapshot.

Initial import of the Intel-maintained ACPI Component Architecture. This
is Intel's reference implementation of the core operating-system ACPI
support. (This import is on the vendor branch.)