sdcc/src/SDCC.y: added missing "break;" (fixes #2)
sdcc/src/SDCC.lex: removed "yylineno" definition as it was already definied (fixes #4)
sdcc/src/SDCC.lex: removed the usage of YY_PROTO() macro (fixes #5)
Replaced all instances of getline() in source and header files to conform the latest stdio.hu (fixes #6)