Fix API by adding hide declaration to BLUETOOTH_ACCEPT_ALL_FILES

Otherwise this will cause errors about API changes with make checkapi

Change-Id: I6275282630cd582aafd587adf81d50500f1ba844
DocumentsUI: Allow open files instead of URIs

Check files' real path and mime type to open them only in standalone mode.
This allows, for example, installing apks.

Change-Id: I4501c694db84b8595cd3928752254a8914539972
Merge "DocumentsUI: Allow open files instead of URIs" into android-4.4
Replaced custom strings with Android defaults

PS2: also replaced menu_cut/copy/paste with strings from android.R.string

Change-Id: I7695b283faa66c6997fad372b31de2c678d222d0
Merge "Replaced custom strings with Android defaults" into android-4.4
Merge pull request #4 from omnirom/android-4.4

合并自 omnirom android-4.4