Avoid NSLogging when not debugging

Change-Id: Ia6d3057ab013aa31dd40058e453f8ca18de91149
It doesn't seem to work to use variable references for file names anyway

Change-Id: Ic98a9c5792b98705b57f39e1d90fb7019bfb95c9
Put the dict_ja and _zh data in files instead of code for iOS

Map the file(s) into memory on demand. The executable file of an app
needs to be as small as possible. Including additional data files in
an app bundle is fine.

Change-Id: Ife9bfe99a2cf0473d459f38f50dfa3304b39e282
Add a source file for debugging convenience

Change-Id: Ic337ac74b38f7c6591a91cc9d996a23b3a3fdf25