Merge commit 'e9499ebbed8a131e1086d9d72d6c20ec4bca263f' into jsanmiya-liquidfun-0.9-dev
Fix typo in generate_docs error message.

Change-Id: I75085437b162fd302985213b22d23a4374bd4533
Tested: Ran the script again.
Change https links to be http links. GitHub doesn't support https.

Also, modify generate_docs.sh to emit an error if an https link exists.

Tested: by running generate_docs.sh before and after fixing the https
links.

Bug: 12128201
Change-Id: If94f29d57e941e8a54f1a64b9086d0b8b2e60aff
Redo doc changes made directly to the github branch, during launch.

The changes are:
- eliminate mention of Fun Propulsion Group
- change YouTube links on landing page

Ran generate_docs.sh to regenerate the html.

Change-Id: Id261ca43777beacd09a6a1f8458ecc0d59391457
Tested: Looked at new html files in browser.
Merge freeglut
Merge googletest
Merge liquidfun