#ifdef  HAVE_CONFIG_H# include <config.h>#endif/*HAVE_CONFIG_H*/ #ifdef  HAVE_STRING_H# include <string.h>#endif/*HAVE_STRING_H*/#ifdef  HAVE_STRINGS_H# include <strings.h>#endif/*HAVE_STRINGS_H*/#include <stdlib.h>#include <error.h>char *stralloc(char *str){   char *retval;   retval=calloc(strlen(str)+1, 1);  if(!retval) {    joe_fatal("Fatal memory allocation error");  }  strcpy(retval, str);  return retval;}