Improve handling of EULA-protected builds with multiple EULA support

Notes:
[gesha, 2012-04-10] Problems rised during discussion with asac:
 - displaying proper EULA if more than one file to be protected with different EULAs exist in the same directory
 - select proper theme without path matching
 - no false positives when several EULA.txt exist
Future plans are to get a service to provide license protection based on different EULAs, @linaro.org logins, users email based statistic what was downloaded by whom.
[asac, Apr 12, 2012]: please clarify what blacklist of old releases means technically and from user experience. Put that info into the blueprint description i guess.
[asac, Apr 12, 2012]: please clarify and be explicit about what updating eula handling based on artifacts name or default EULA work item means
[asac, Apr 12, 2012]: It's not clear to me how this solves the discussed problem that we want to be able to have some hwpacks EULA protected and some NO-EULA in the same directory. What I proposed on the call was to use something like a file hwpackname.tar.gz--EULA.txt that is shipped alongside the bits to trigger EULA for individual files. I don't see this reflected. Might make sense to fork out a standalone blueprint just for that as this is what we really care short term. Ping me with questions :)
[asac, Apr 12, 2012]: proposal: lets split this up in: 1. per-file-EULA-publishing, 2. contact-data-collection-for-EULA-publishing, 3. open id protection of private hosting directories (this is probably something more like an IS ticket and might not need a blueprint on its own). Let's chat to be sure we catch all the requirements.
[asac, Apr 12, 2012]: in any case: all blueprints need proper acceptance criteria and headline :).
[dzin, Apr 17, 2012] retarget to 12.04
[dzin, Apr 19, 2012] Georgy, please communicate the status of this work.
[dzin, Apr 27, 2012] Postponed work item will be broken out into a new blueprint.

Meta:
Headline: Click through license protection supports per-file EULA publishing to handle multiple artefacts that needs to be protected in the same directory.
Acceptance: EULA protected and open source artifacts co-exist in the same directory and proper EULA is displayed if needed for each protected downloadable item.

Work items:
Blacklist all old releases.linaro.org directories: DONE
Update implementation of EULA/OPEN-EULA handling based on artifacts name or default EULA.txt/OPEN-EULA.txt: DONE
Update license theming based on artifact name: DONE
Play through and eliminate possible false positives with several EULAs: DONE
Fix https access issue: DONE
Update build scripts to generate per file EULA: POSTPONED