* tests/input.at : replaced [-Wyacc] with [-Werror=yacc] todo: fix the other failed test of the suite, tests/conflicts.at:1554
* src/getargs.c : here
* src/complain.h : errors_flag variable * src/complain.c : actual stuff happens here * src/conflits.c : differentiated SR and RR conflicts * src/getargs.c : flags_argmatch recognizes the new -Werror format