[Midnightbsd-cvs] src: sys/sys: Introduce sysctls for exposing kernel features like PAE,

[laffer1 at midnightbsd.org]

Log Message:
-----------
Introduce sysctls for exposing kernel features like PAE, AIO or freebsd 4,5,6 compatibility.

Fix a definition that I missed on a previous commit that was breaking sparc.

Modified Files:
--------------
    src/sys/amd64/ia32:
        ia32_signal.c (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/amd64/ia32/ia32_signal.c?r1=1.3&r2=1.4)
    src/sys/kern:
        kern_mib.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/sys/kern/kern_mib.c?r1=1.2&r2=1.3)
        vfs_aio.c (r1.4 -> r1.5)
        (http://cvsweb.midnightbsd.org/src/sys/kern/vfs_aio.c?r1=1.4&r2=1.5)
    src/sys/sparc64/include:
        md_var.h (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/sparc64/include/md_var.h?r1=1.3&r2=1.4)
    src/sys/sys:
        sysctl.h (r1.7 -> r1.8)
        (http://cvsweb.midnightbsd.org/src/sys/sys/sysctl.h?r1=1.7&r2=1.8)