Teach cparser how to parse (f)(void);, i.e. global declarations can start with a (.

[cparser] / driver / firm_codegen.h

#ifndef FIRM_CODEGEN_H
#define FIRM_CODEGEN_H

/* Calls the specified backend. */
void do_codegen(FILE *out, const char *asm_file_name);

#endif /* FIRM_CODEGEN_H */