* zpipe.cpp is based on a public-domain example
* zpipe.h trivial file, I change the license to gpl
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@3908 96395faa-99c1-11dd-bbfe-3dabce05a288
* common.h is mostly based on multiple file in ffmpeg. So apply the same licence as the original files
* Others zerofrog's file: add a note on the missing copyright notice.
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@3627 96395faa-99c1-11dd-bbfe-3dabce05a288