[Midnightbsd-cvs] src: src/include: Add spawn.h for posix_spawn(3) interface.

[laffer1 at midnightbsd.org]

Log Message:
-----------
Add spawn.h for posix_spawn(3) interface.

Add new kqueue primitives required to support GCD, such as EVFILT_USER and EV_TRIGGER. (libdispatch)

Modified Files:
--------------
    src/include:
        Makefile (r1.8 -> r1.9)
        (http://cvsweb.midnightbsd.org/src/include/Makefile?r1=1.8&r2=1.9)
    src/sys/kern:
        kern_event.c (r1.4 -> r1.5)
        (http://cvsweb.midnightbsd.org/src/sys/kern/kern_event.c?r1=1.4&r2=1.5)
    src/sys/sys:
        event.h (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/sys/event.h?r1=1.3&r2=1.4)