Use undefined scope for undefined IPv6 addresses.
Better support for /31 networks.
Fix behavior of ipa_opposite().
It was giving wrong results on /30 networks.
Fixes for the programmer's manual.
Spelling fixes to progdoc.
Added library progdocs.
Removal of useless includes continues...
Include "lib/string.h" instead of <string.h>. It should give us bzero()and other non-portable functions on all systems.
Added ip_scope_text() for translating of scopes to strings.