Rearranged a few sections, add memoryuse section.
current.sgml, ports.sgml, porting.sgml
Added a <label>s for cross reference targes.
submitters.sgml
Lots of editing, added cross references to other sections of
the handbook. Added a sample BSD-style copyright statement.
eresources.sgml
Updated the mailing list section, thanks to Peter Dufault.
authors.sgml
Added Peter Dufault, David Greenman and Joerg Wunsch.
memoryuse.sgml
A new section about how/where in PC memory the FreeBSD kernel
gets loaded and run.
