Merge branch 'develop'
Added a demo for church numerals in LFE.
Merge pull request #27 from oubiwann/develop

Added an example ported from Peter Norvig's PAIP.
Merge pull request #28 from oubiwann/church-encoding

Church encoding
Merge git://github.com/rvirding/lfe into develop
Merge branch 'develop' of git://github.com/rvirding/lfe into develop
Lint slurped files and give better error reports
Add to_lint option to compiler
Remove checks on slurped files

These are unnecessary now that we lint files.
Add optional comments strings in CL style to function definitions

Currently these are just ignored but in the future we will kepp them.
Merge branch 'develop' of https://github.com/rvirding/lfe into develop
Break environment functions out of lfe_lib into lfe_env

Also added new update_mbinding function.
Create MODULE macro when using defmodule
Add optional comments strings in CL style to macro definitions

Currently these are just ignored but in the future we will keep them.
Add more a-list functions to predefined library

Add functions pairlis, (r)assoc-if, (r)assoc-if-not and sublis.
Fix indenting of known forms when no depth limit

The pretty printer did not correctly handle the case when there was no
depth limit and just ignored the rules.
Merge branch 'develop' of https://github.com/rvirding/lfe into develop