In wing-common:

- Google apps updated to 2013/08/12 in wing-common folder
- left update.apk in apk from wing-common (wont change anyway so leave it there)
- Removed FileExplorer package from ProductCommon.mk (using FileExplorer HD instead)
- Removed camera APK package from ProductCommon.mk
- Removed all preinstallapk from wing-common (moved to olinuxino-a20)
- Removed preinstallapk directive from ProductCommon.mk and preinstallapk folder (moved to olinuxino-a20)
- Modified ProductCommon.mk to add localization settings (timezone & locale only)

Preinstall script and apks moved to olinuxino-a20 instead of wing-common