Linux /proc/apm: handle hex and decimal (and octal!) values.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403675

src/power/linux/SDL_syspower.c

@@ -318,7 +318,7 @@ static SDL_bool
 int_string(char *str, int *val)
 {
     char *endptr = NULL;
-    *val = (int) strtol(str + 2, &endptr, 16);
+    *val = (int) strtol(str, &endptr, 0);
     return ((*str != '\0') && (*endptr == '\0'));
 }