manual: rephrase some Telepen stuff
TELEPEN/TELEPEN_NUM: support AIM-defined Start/Stop characters
aztec: debug_print: always print Binary String (wasn't if length 0)
AZTEC: fix not allowing for lowercase AIM id (FNC1 2nd position)
gs1se_verify: remove now-deprecated gs1_encoder_iNO_SYNDICT/iQUIET
aztec: avoid possible overflow in comparison
GUI: suppress some more "-Wshorten-64-to-32" warnings (qt5/6 diff)
common: move FM_NO_VSNPRINTF (filemem) -> Z_NO_VSNPRINTF & use