char * cpy2 ( char *to, char *from, int delim );
char * cpytill ( char *to, char *from, int delim );
void growstr ( char **strptr, int *curlen, int newlen );
-char * instr ( char *big, char *little );
-char * savestr ( char *str );
+char * instr ( char *big, const char *little );
+char * savestr ( const char *str );
void fatal ( const char *pat, ... );
void warn ( const char *pat, ... );
int prewalk ( int numit, int level, int node, int *numericptr );