docs: Changes to release notes for the Android SDK 22.6.0 release.

Updated relese notes for 22.6.0:

Stage:
http://quixote.mtv.corp.google.com:8001/sdk/index.html
http://quixote.mtv.corp.google.com:8001/sdk/installing/installing-adt.html
http://quixote.mtv.corp.google.com:8001/tools/sdk/eclipse-adt.html
http://quixote.mtv.corp.google.com:8001/tools/sdk/tools-notes.html
http://quixote.mtv.corp.google.com:8001/tools/revisions/build-tools.html

(Patch: Cleared md5 and ZIP entries. To be updated with values for
 the final build when available.)
(Patch: Added emulator bugfixes from Xav.)
(Patch: Addressed Joe's comments. Added filenames and checksums for the
 rc7 build)
(Patch: Replaced sizes and hashes with values for rc8)
(Patch: Added lint categories, addressed Joe's comments)
(Patch: Added note on the lint issue)
(Patch: Addressed Joe's comments, reverted adt-bundle-* to 20131030 files.)

Change-Id: I508d47959c4f478a3ed6b927fd460139cd5cfe36