Merge pull request #240 from Techokami/master

Further improved irc.lua, better display for actions, computer.beep() when nick is mentioned.
Bumping version number for MC1.7 hotfix, to keep version numbers synchronized.
Merge branch 'master' of github.com:MightyPirates/OpenComputers
Merge pull request #3 from MightyPirates/master

Keeping things in sync