Switch cesfic over to the common interrupt dispatch code.

Remove all the __P() from sys (excluding sys/dist)
Diff checked with grep and MK1 eyeball.
i386 and amd64 GENERIC and sys still build.

branches: 1.3.4; 1.3.10;
Unify splraiseipl(9) implementation among m68k ports as per
suggestion from isaki@ on port-m68k.

For cesfic (compile test only):
- use static splraise4() for splvm() and remove isrcomputeipl() for IPL_VM
because this port supports only one model
- make makeiplcookie(9) return PSL bits via ipl2psl_table[] rather than
ipl indexes
- make ipl2psl_table[] uint16_t rather than int

branches: 1.2.2; 1.2.4;
Move to 2 clause TNF license

branches: 1.1.8; 1.1.126; 1.1.128; 1.1.130;
Initial import of the known working kernel bits for the NetBSD/cesfic
port. cesfic is a VME board with one or two mc68040 processors. See
the README file for details.
The port is working well with a.out userland, there are some problems
with ELF still, like applications running out of memory where it is not
expected. Some parts, in particular the pmap (which was taken from hp300
four years ago), need updating, but this is easier done within the NetBSD
CVS tree.