CONTRIBUTING: fix link to mailing lists.
make include and include_string return the value of the last expression.
fixes #3848, fixes #3822

some may not like this, but it really improves many use cases. for example
evalfile() goes from being a crazy special case to a 1-liner.
Fix typo
Add missing import to graphics.jl
Fix #3856
fix #3854. oops -- not sure how i missed that
Merge branch 'master' of github.com:JuliaLang/julia