Pull up following revision(s) (requested by pgoyette in ticket #524):

distrib/sets/lists/man/mi                      1.1574
distrib/sets/lists/modules/md.amd64            1.73
distrib/sets/lists/modules/md.i386              1.76
share/man/man4/amdtemp.4                        1.11
share/man/man4/man4.x86/Makefile                1.17
share/man/man4/man4.x86/amdsmn.4                1.1-1.3
share/man/man4/man4.x86/amdzentemp.4            1.1-1.6
sys/arch/amd64/conf/ALL                        1.79,1.80
sys/arch/amd64/conf/GENERIC                    1.482,1.484
sys/arch/amd64/conf/XEN3_DOM0                  1.146,1.147
sys/arch/x86/pci/amdsmn.c                      1.1-1.2
sys/arch/x86/pci/amdsmn.h                      1.1
sys/arch/x86/pci/amdzentemp.c                  1.1-1.7
sys/arch/x86/pci/files.pci                      1.22,1.23
sys/modules/amdzentemp/amdzentemp.ioconf        1.2

Add amdzentemp from FreeBSD via Ian Clark.

man pages for amdsmn and amdzentemp.

Some clean-up on the HISTORY and AUTHORS sections, and addition of a BUGS
section to document the fact that we don't yet handle the required temp
offset, nor do we expose the available thermal-trip value.

Add missing article 'a'

KNF: Put back the blank line following the empty variable declarations
Put back the variable declaration, too, and mark it __diagused
Otherwise a DIAGNOSTIC kernel will complain about the variable being
undeclared.

Correct placement of __diagused attribute.

Modularize the amdsmn(4) driver, and update dependency for amdzentemp(4),
Create amdsmn(4) amd amdzentemp(4) modules for X86.

(martin)