zxtune-android: wait for async operations finish on exit.
Explicit rebuild of native libs for android builds.
zxtune-android: add send/share actions. Rework menu structure. Add icons to main actions.
zxtune-android: system integration for view intent.
Support xslt-based manifest templates for android builds.
zxtune-android: use xslt manifest template. Declare all supported file types by extension.
zxtune-android: fix NPE on moving to parent dir.
zxtune-android: fix NPE while processing intent without action.
zxtune-android: support remote control via standard widget on lockscreen (ics+).
zxtune-android: fix NPE in cases when service connected earlier than activity attach.
Update changelog.