proposed split of start-stop-daemon.c

[Nathan Hawkins <utsl@quic.net>]

I've been working on improved FreeBSD support for start-stop-daemon.c, *
and have been thinking for a while of splitting it into separate files.
One file for the generic parts, and one per OS supported. Currently,
it's #ifdef spaghetti, because we have support for Linux, Solaris,
HP-UX, Hurd, and three kinds of BSD, all jammed into the same file.
IMHO, it'd be a lot easier to understand and maintain if these were
separated.

Are there any objections or suggestions before I start working on this?

	---Nathan

* There appear to be some bugs associated with not having pid_is_exec().