Continue changing STRING length from int8_t to uint8_t.
This fix segmentation faults caused by overflow when converting from string to numeric types.
include ../../common.mk
lib_LIBRARIES = libstage4_iec.a
libstage4_iec_a_SOURCES = generate_iec.cc
libstage4_iec_a_LIBADD = ../stage4.o
libstage4_iec_a_CPPFLAGS = -I../../../absyntax