Replace uses of atoi() with strtol() or stroul() as appropriate (#394)

As a side-effect of this change, we also resolve a a problem with
signed file version numbers, so that instead of version 2147483647
wrapping to -2147483648 we can go as far as 4294967296 before we
have issues.  Various sprintf() formats get changed from %d to %u.
The DOS version code is left behind as int versions.

Author: nbriggs

inc/lispver1.h

@@ -39,7 +39,7 @@
 	NumericStringP(vp, YES, NO);					\
        NO: *vp = 0;							\
        YES:								\
-	if ((*vp)) ver = atoi(vp);					\
+	if ((*vp)) ver = strtol(vp, (char **)NULL, 10);                \
 	else ver = -1;							\
       }									\
       else ver = -1;							\

inc/lispver2.h

@@ -8,7 +8,7 @@
 									\
 	register char	*lv_cp;						\
 	register char	*lv_vp;						\
-	register int	lv_ver;						\
+	register unsigned lv_ver;					\
 	char		lv_ver_buf[VERSIONLEN];				\
 									\
 	lv_cp = pathname;						\
@@ -48,20 +48,20 @@
 			/*						\
 			 * Convert the remaining field to digit.	\
 			 */						\
-			lv_ver = atoi(lv_vp + 1);				\
-			if (lv_ver == 0) {					\
+			lv_ver = strtoul(lv_vp + 1, (char **)NULL, 10); \
+			if (lv_ver == 0) {				\
 				/* versionless */			\
 				*lv_vp = 0;				\
 			} else {					\
-				sprintf(lv_ver_buf, ".~%d~", lv_ver);		\
+				sprintf(lv_ver_buf, ".~%u~", lv_ver);	\
 				*lv_vp = 0;				\
 				strcat(pathname, lv_ver_buf);		\
 			}						\
 			goto CONT;					\
 									\
 		      NO:						\
 			strcpy(lv_ver_buf, lv_vp + 1);			\
-			strcat(lv_ver_buf, "~");				\
+			strcat(lv_ver_buf, "~");			\
 			*lv_vp++ = '.';					\
 			*lv_vp++ = '~';					\
 			*lv_vp = 0;					\

inc/locfile.h

@@ -385,9 +385,9 @@ extern	DLword	*Lisp_world;	/* To access LispSysout area */
 			*(start - 1) = ';';					\
 			*start = '\0';						\
 			*end = '\0';						\
-			/* call ato i to eliminate leading 0s. */		\
-			ver_no = atoi(start + 1);				\
-			sprintf(ver_buf, "%d", ver_no);				\
+			/* call strtoul() to eliminate leading 0s. */		\
+			ver_no = strtoul(start + 1, (char **)NULL, 10);		\
+			sprintf(ver_buf, "%u", ver_no);				\
 			strcat(pathname, ver_buf);				\
 			goto CONT;						\
 										\
@@ -494,7 +494,7 @@ extern	DLword	*Lisp_world;	/* To access LispSysout area */
 
 #define	MAXVERSION		999999999
 
-#define	LASTVERSIONARRAY	(-1)
+#define	LASTVERSIONARRAY	((unsigned) -1)
 #define	VERSIONARRAYLENGTH	200
 
 #define NoFileP(varray)						\

src/dir.c

@@ -329,7 +329,7 @@ void print_finfo(FINFO *fp)
   if (fp != (FINFO *)NULL) {
     do {
       printf("%s -> ", fp->lname);
-      printf("%d\n", fp->version);
+      printf("%u\n", fp->version);
       fp = fp->next;
     } while (fp != (FINFO *)NULL && fp != sp);
 
@@ -685,7 +685,7 @@ static int enum_dsk_prop(char *dir, char *name, char *ver, FINFO **finfo_buf)
       if (*fver == '\0')
         nextp->version = 0;
       else
-        nextp->version = atoi(fver);
+        nextp->version = strtoul(fver, (char **)NULL, 10);
       nextp->ino = sbuf.st_ino;
       nextp->prop->length = (unsigned)sbuf.st_size;
       nextp->prop->wdate = (unsigned)ToLispTime(sbuf.st_mtime);
@@ -948,7 +948,7 @@ static int enum_dsk(char *dir, char *name, char *ver, FINFO **finfo_buf)
       if (*fver == '\0')
         nextp->version = 0;
       else
-        nextp->version = atoi(fver);
+        nextp->version = strtoul(fver, (char **)NULL, 10);
       nextp->ino = sbuf.st_ino;
       n++;
     }
@@ -1399,7 +1399,7 @@ static int trim_finfo(FINFO **fp)
            * Versionless is not linked to any versioned
            * file.
            */
-          sprintf(ver, ";%d", mp->version + 1);
+          sprintf(ver, ";%u", mp->version + 1);
           strcat(sp->lname, ver);
           sp->lname_len = strlen(sp->lname);
           pnum = ++num;
@@ -1527,7 +1527,7 @@ static int trim_finfo_highest(FINFO **fp, int highestp)
            * Versionless is not linked to any versioned
            * file.
            */
-          sprintf(ver, ";%d", mp->version + 1);
+          sprintf(ver, ";%u", mp->version + 1);
           strcat(sp->lname, ver);
           sp->lname_len = strlen(sp->lname);
           /*
@@ -1709,7 +1709,7 @@ static int trim_finfo_version(FINFO **fp, int rver)
            * file.
            */
           if (mp->version + 1 == rver) {
-            sprintf(ver, ";%d", rver);
+            sprintf(ver, ";%u", rver);
             strcat(sp->lname, ver);
             sp->lname_len = strlen(sp->lname);
             /*
@@ -2111,7 +2111,7 @@ LispPTR COM_gen_files(register LispPTR *args)
 
     if (*ver != '\0') {
       highestp = 0;
-      version = atoi(ver);
+      version = strtoul(ver, (char **)NULL, 10);
       if (version > 0) strcpy(ver, "*");
     } else {
       version = 0;