**/Makefile.kmk: Cosmetic changes.
FreeBSD: Certain fixes to run on CURRENT and clean up the support driver character device handling, thanks to Bernhard Froehlich, Jung-uk Kim and Ed Schouten
Added a loadall.sh on linux as well (see darwin). This builds the driver as the current user and sudos to root for the reloading. Also moved the linux/freebsd specific makefile mess down into the respective directories.