drawterm: add ERANGE to strtod
 [rsc] --rw-rw-r-- M 391777 rsc drawterm 8407 Apr  5 13:03 sys/src/cmd/unix/drawterm/libc/strtod.c
	/n/sourcesdump/2006/0405/plan9/sys/src/cmd/unix/drawterm/libc/strtod.c:65,70 - 
	/n/sourcesdump/2006/0406/plan9/sys/src/cmd/unix/drawterm/libc/strtod.c:65,74
	  	char*	cmp;
	  };
	  
	+ #ifndef ERANGE
	+ #define ERANGE 12345
	+ #endif
	+ 
	  double
	  fmtstrtod(const char *as, char **aas)
	  {