merge ktrace-lwp.

Use FS_OPS() macro.

Drop trailing spaces.

Update for LFSv2 support. Ports that have "bootxx_lfs"-style
bootblocks currently only support LFSv2, but the second level
"boot" program supports both LFS versions.

first cut at NetBSD/sbmips bootstrap programs, cloned from NetBSD/alpha's
and then modified to work with CFE as the firmware.