begin replacing lynx calls with internal emacs functions

this is going to be a bit of a pain...
remove last dependencies on lynx

rather than using lynx --dump, the code instead downloads the URL and
uses some regexps to parse out authors, titles, links, publication
dates, etc...

this makes me a little nervous, and it will break badly if ADS ever
changes their output format.  but this produces more 'emacs-y' output
and it doesn't require users to have the lynx browser installed.
added functionality to view abstracts

this is pretty rudimentary, and it breaks on abstracts which contain
HTML tags
added instructions
minor cleanup
bugfix: display abstracts with html

this is a little hackish, and it uses a regexp which depends on there
being a <hr> rule right after the end of the abstract.  I think that's
always there in ADS abstract pages...
docs and comments
todo
Merge branch 'master' into no-lynx
bump version #