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a nodeid.  rmanage is much more convenient to use for debugging than the
ASF libreboot wrapper...

have to re-run the swig-wrappers target in tools/rmanage/GNUmakefile to
generate the wrapper and perl module; this must of course be done when
changes are made to the rmcp libs.

  * GNUmakefile.in, configure, configure.in: add tools/rmanage
  * tbsetup/GNUmakefile.in, tbsetup/power*.in: add rmcp to power command
  * tools/GNUmakefile.in: add rmanage
  * tools/rmanage/*.c,*.h: bugfixes, swig helper methods, etc.
  * tools/rmanage/rmcp.i: swig import control file
  * tools/rmanage/rmcp.pm,rmcp_wrap.c: rmcp wrapper/module generated by swig

Linux/FreeBSD, by talking directly to an ASF-enabled NIC.

The rmcp lib in rmcp.c is quick and dirty.  Since we didn't need IPMI, I
didn't make any real attempt to unentangle RMCP and ASF.  However, if we
do need it, we could easily generalize the code.