__RCSID police
Adjust wscons.conf documentation to its current 'setvar' behavior
(rc.d/wscons is now able to set variables for arbitrary control device).
add mount_sysctlfs.8
* use more sensible perms
* use mounter uid/gid as file owners
* sprinkle static
Add support for BCM5786 with simply adding its PCI product id.

Testing on Fujitsu FMV-D5240 and works fine.
Print the polarity and trigger flags as well. Can help with debugging
on fancy notebooks.
- instead of scanning an array of iods, maintain a list of idle iods.
- make nfs_getset_niothreads MP friendly.
Added wscons to ramdisk for tpctl.
Parse boot_flags specified on boot prompt and
pass decoded boothowto value to kernel via bootinfo.
Lookup boothowto flags in bootinfo.
Some style nits.
More style nits.
make the hypot/atan2 functions weak aliases, because they are used
internally by the historical cabs(), and the future c99 cabs/carg
Fix kernel compilation with 'options KSTACK_CHECK_MAGIC':  change
'void *' to 'char *' so pointer arithmetic will work.
Fix 'tags' target:  ${COMM} overflows the echo command line, so
use ${FINDCOMM} instead.
Use __arraycount().
Add offset for Host Bridge Target Interrupt Control register.
Constify.
Constify.  bcopy -> memcpy.
Use sockaddr_dl_init().