[Midnightbsd-cvs] src: kern_proc.c: Add giant lock around vrele and make all the sysctl's

[laffer1 at midnightbsd.org]

Log Message:
-----------
Add giant lock around vrele and make all the sysctl's MPSAFE where possible.

Modified Files:
--------------
    src/sys/kern:
        kern_proc.c (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/kern/kern_proc.c?r1=1.3&r2=1.4)