Backed out changeset 19fdbc7ad829 (bug 1098239)

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extra : rebase_source : e932299bc61e56e811e0187ddc65ab8b62b7a32b
Bug 1096627 - Fail Fennec build if GeckoView library depends on more of Fennec. r=gps

Notes:

* The Classycle definition file was built by hand via a process of trial
  and error.
* The Classycle JAR file is used only at build time.  I don't want to
  land it near code because it shouldn't be included in any build.  In
  particular, landing in mobile/android/base can foul up IDE
  configurations.
* The Classycle license requires redistributing the README.txt with the
  binary assets.
* Even when Proguard is "disabled", the target still runs, so this is a
  good place to put a build step that the built JARs, as a collective,
  are healthy.

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extra : rebase_source : 7df8aa0fd0537ec7cb32eb02259797523f5ba97d