Removed the Ikarus and Chez Scheme specific r6rs libraries.
  nanopass.chezscheme.sls (removed),
  nanopass/implementation-helpers.ikarus.ss (removed)

Added a file with some notes about the conversion process, but not I may have
missed a few things.
  conversion.txt (new)

Moved files from Chez Scheme enhanced R6RS syntax to Racket syntax and renamed
files to match.  These now all load within Racket, but are not yet ready for
prime time (for instance I cannot even define the standard lambda calculus yet,
so there is a bit of debugging to go.
  nanopass.ss -> nanopass.rkt, nanopass/helpers.rkt,
  nanopass/language-helpers.ss -> nanopass/language-helpers.rkt,
  nanopass/language-node-counter.ss -> nanopass/language-node-counter.rkt,
  nanopass/language.ss -> nanopass/language.rkt,
  nanopass/meta-parser.ss -> nanopass/meta-parser.rkt,
  nanopass/meta-syntax-dispatch.ss -> nanopass/meta-syntax-dispatch.rkt,
  nanopass/parser.ss -> nanopass/parser.rkt,
  nanopass/pass.ss -> nanopass/pass.rkt, nanopass/records.rkt,
  nanopass/unparser.ss -> nanopass/unparser.rkt
Merge branch 'master' of github.com:akeep/nanopass-framework-racket