Use explicitly set Referer header for downloading
[auengine] Add referer
Replace 'referer' with 'http_referer'
Makefile: include the docs in the tarball
[cspan] Roll back unfinished rtmp support
[vice] Remove extractor

The generic ooyala detection works fine.
[slashdot] Remove extractor

The generic ooyala detection works fine.
Merge remote-tracking branch 'dstftw/download-referer-header' (closes #2628)