This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
1: generate the outfile in /tmp if it's not specified explicitly.
2: if the outfile was implicitly placed in /tmp, automatically remove it.
This means that you can type: modload /lkm/ipfw_mod.o and it'll work, it
wont try and write to /lkm, and it wont leave the (normally) useless
symbol file.
This should not interfere with things like ibcs2 and atapi, which
export some symbols from one LKM to the other by leaving the symbol file.
of the recent changes to bsd.kmod.mk, which enforces that the entry
point be <modname>_mod, unless overridden.
This means that when modloading "/lkm/foo_mod.o", it'll use "foo_mod"
as the default entry point (instead of xxxinit) unless you specify
another via the -e option.
modload doesn't honor it's -p argument.
It also will destroy the input file when you don't specify an output
symbol file with -o.
Submitted by: John Kohl
