Allow ext-less config filenames for package data.
Allow ext-less config filenames for package data.

j717273419/OpenCC,PeterCxy/OpenCC,chongwf/OpenCC,j717273419/OpenCC,jakwings/OpenCC,capturePointer/OpenCC,capturePointer/OpenCC,jakwings/OpenCC,chongwf/OpenCC,xuecai/OpenCC,wisperwinter/OpenCC,BYVoid/OpenCC,PeterCxy/OpenCC,BYVoid/OpenCC,PeterCxy/OpenCC,wisperwinter/OpenCC,BYVoid/OpenCC,Arthur2e5/OpenCC,xuecai/OpenCC,Arthur2e5/OpenCC,BYVoid/OpenCC,capturePointer/OpenCC,chongwf/OpenCC,Arthur2e5/OpenCC,jakwings/OpenCC,j717273419/OpenCC,BYVoid/OpenCC,xuecai/OpenCC,BYVoid/OpenCC,wisperwinter/OpenCC