Update to 'font_data' array generated by font_8x16_pack.c.
Only font characters referenced in a codepage (codepages.h) can be displayed.
This update removes unused font characters from 'font_data' saving 3.3K
sx10: remove unneeded files loader/sx10/resetcode
a3400: define CAM_HAS_MOVIE_DIGEST_MODE, CAM_IS_VID_REC_WORKS; add transparent grey to CHDK palette