latest Android support library v4 (revision 21, October 2014) from http://developer.android.com/tools/support-library/index.html
submodules + minor change in auto-build (incremental Eclipse build)
Add UI controls for rendition:flow and update spread change settings to include support for "auto".
submodule
fixed https://github.com/readium/SDKLauncher-Android/issues/33 (warning messages / cancellable popup dialogs as SDK error handler)
submodule
Merge pull request #39 from readium/feature/ui_rendition

Add UI controls for rendition:flow, updated spread change to include auto.
Merge branch 'develop' into feature/obfuscatedFonts