Implement workaround to resolve https://osdn.net/projects/hengband/ticket/41161 and...

Implement workaround to resolve https://osdn.net/projects/hengband/ticket/41161 and part of https://osdn.net/projects/hengbandforosx/ticket/41228 .  Move macro definitions from autopick-editor-table.h to autopick-menu-data-table.c so the preprocessing with nkf on Linux and Mac can change the encoding for Japanese.  Remove autopick-editor-table.h.  Change the macros in autopick-keys-table.h to be pointers to constant strings.  Initialize those strings in autopick-menu-data-table.c so the initializing strings can be shared with the initializers for menu_data and so the preprocessing with nkf can change the encoding for Japanese.