media-video/lightworks: version bump

Version bump with gentoo-specific fixes
media-video/lightworks: new binary hash update
lightworks: depends on media-libs/portaudio
media-video/lightworks: untabify
media-video/lightworks: alpha to beta, hash update
Merge pull request #5 from mcdebugger/master

media-video/lightworks: version bump, hash updates, dependencies fix