Machete-waving to fix mpls rump build after pktqueue changes.

Add a COMMENT describing what each component roughly does.

"make describe" prints the comment.

Requested/inspired by Vincent Schwarzer on rumpkernel-users

purge rump/net of component-specific opt directories

add ioconf files for pseudo device attach prototypes

branches: 1.2.4; 1.2.8; 1.2.10;
rename component.c -> netmpls_component.c

branches: 1.1.2; 1.1.4;
Add librumpnet_netmpls that provides MPLS features into rump kernels
ok'ed pooka@

Machete-waving to fix mpls rump build after pktqueue changes.

branches: 1.2.4; 1.2.8;
Merge riastradh-drm2 to HEAD.

branches: 1.1.2; 1.1.4;
Add librumpnet_netmpls that provides MPLS features into rump kernels
ok'ed pooka@

branches: 1.2.14;
finish ifmpls->mpls renaming.

branches: 1.1.2;
add ioconf files for pseudo device attach prototypes

rename component.c -> netmpls_component.c

Register netisr's from component constructors instead of via a hardcoded
global list.

branches: 1.1.2; 1.1.4;
Add librumpnet_netmpls that provides MPLS features into rump kernels
ok'ed pooka@

Garbage-collect the remaining vestiges of netisr.

Convert MPLS from a legacy netisr to pktqueue.

finish ifmpls->mpls renaming.

Put the kernelside rump kernel headers into <rump-sys> instead of
sprinkling them around the faction directories. Avoids having
to add a CPPFLAGS (or several) to pretty much every component
Makefile.

Leave compat headers around in the old locations.

The commit changes some autogenerated files, but I'll fix the
generators shortly and regen.

add ioconf files for pseudo device attach prototypes

branches: 1.2.2;
Nuke the DOMAINADD() macro and just call domain_attach(), now that things
work correctly that way.

branches: 1.1.4; 1.1.6; 1.1.10;
rename component.c -> netmpls_component.c

Remove shlib_version files and just use Makefile SHLIB_MAJOR/MINOR,
with the default provided by Makefile.rump (they're all 0.0 anyway)

branches: 1.2.4; 1.2.8; 1.2.10;
Merge riastradh-drm2 to HEAD.

branches: 1.1.2; 1.1.4;
Add librumpnet_netmpls that provides MPLS features into rump kernels
ok'ed pooka@