created initial file place holders for new commands and configsets
include rewritefrom in the list of allowed flags,
improve description, update header with new list of values
update header with new list of values and new default
clarify that only sublists explicitly mentioned in the
"sublists" configuration setting are given aliases
preliminary, incomplete, and possibly wrong help file for new configset archive_url
preliminary, incomplete, and possibly wrong help file for new configset boune_rules
Change allowed_classes to an enumerated array.  Only
the following four values are allowed:
  all digest each nomail
update text related to digest sub-classes (wording used in the new configset allowed_classes)
correct wording from earlier today, based on Jason's input
add new registry repair modes to rekey command
new text for 'help configset archive_url', updated list of variables (including ARCURL) in 'help variables'
improve readability of 'help allowed_flags' text, including newly added flag groups
include cross-references to help for allowed_classes, set, default_flags
improve readability of 'help allowed_flags' text, including newly added flag groups
make sense of new options in allowed_flags, default_flags, and set
(trying to avoid typing in the same long list of flags three times)
fix description of 'all' class for 'set' and 'allowed_classes'
refer to "set" for description of flags, just list defaults here
add latchkey_lifetime and log_lifetime,
add help cross-references between all "help configset_*_lifetime" files
new configset nonmember_flags, documented and cross-referenced
document new 'configset sublists'