Merging ACPI related code is on the way.

Hi, I have committed orthognal part of ACPI driver. The rest part will be committed after a few days. I put the part at URL:http://people.freebsd.org/~takawata/sysdiff. This can be applied for HEAD. Please test and report about it if there is serious problem,such as breaking build. Thanks.

Re: Merging ACPI related code is on the way.

I have committed orthognal part of ACPI driver. The rest part will be committed after a few days. I put the part at URL:http://people.freebsd.org/~takawata/sysdiff. This can be applied for HEAD. Please test and report about it if there is serious problem,such as breaking build. It seems