Specific issues to fix

Want to make Hasso Tepper’s day?  He’s posted 4 separate bugs for DragonFly that revolve around pkgsrc packages: sysutils/hal, sysutils/libgtop, audio/pulseaudio, and HTML5 video in FireFox.  All of these (except the last) are issues that have been present for a while, and fixing any of them will help a number of other pkgsrc packages work correctly on DragonFly.  If the work appeals to you, please dig in.