Enable lexical binding in every source lisp file

[deepfire]

Resolve #815.

[deepfire]

Note, how emacs 24.5.2 fails to detect some bindings as used.. Pretty amazed by the fact.

[deepfire]

@gracjan, there was one, yes, in haskell-cabal-find-subsection.

[gracjan]

Lets give this pull request 24h for other guys reading to chime in if they see anything wrong in here.

[syohex]

First line should be package declaration by Emacs packaging convention. So first line should be as below.

 ;;; ghc-core.el --- Syntax highlighting module for GHC Core -*- lexical-binding: t -*-

Examples

• https://github.com/emacs-helm/helm/blob/875f0a2396c6dcee13be17eec4b507a908f2953e/helm.el#L1
• https://github.com/bbatsov/projectile/blob/926d6f7fafc8acab16b04de0b5b7b19f6062bfed/projectile.el#L1

[gracjan]

@deepfire, can you amend your first commit so that it follows generally accepted practice pointed out by @syohex?

[deepfire]

@gracjan, sure thing.

[deepfire]

Done.

[gracjan]

Thanks!