Fixed problem in myisampack with blobs

myisam/myisamchk.c:
  Fixes bug when not using --set-character-set
myisam/myisampack.c:
  Fixed problem with blobs

myisam/myisamchk.c

@@ -200,7 +200,7 @@ static struct option long_options[] =
 
 static void print_version(void)
 {
-  printf("%s  Ver 1.50 for %s at %s\n",my_progname,SYSTEM_TYPE,
+  printf("%s  Ver 1.51 for %s at %s\n",my_progname,SYSTEM_TYPE,
 	 MACHINE_TYPE);
 }
 
@@ -608,7 +608,8 @@ static int myisamchk(MI_CHECK *param, my_string filename)
        info->s->state.header.file_version[3] != myisam_file_magic[3] ||
        (set_charset && set_charset->number != share->state.header.language)))
   {
-    check_param.language=set_charset->number;
+    if (set_charset)
+      check_param.language=set_charset->number;
     if (recreate_table(&check_param, &info,filename))
     {
       VOID(fprintf(stderr,

myisam/myisampack.c

@@ -251,7 +251,7 @@ static struct option long_options[] =
 
 static void print_version(void)
 {
-  printf("%s  Ver 1.9 for %s on %s\n",my_progname,SYSTEM_TYPE,MACHINE_TYPE);
+  printf("%s  Ver 1.10 for %s on %s\n",my_progname,SYSTEM_TYPE,MACHINE_TYPE);
 }
 
 static void usage(void)
@@ -1670,7 +1670,7 @@ static int compress_isam_file(MRG_INFO *mrg, HUFF_COUNTS *huff_counts)
       max_calc_length+=huff_counts[i].tree->height;
     else if (huff_counts[i].field_type == FIELD_BLOB ||
 	     huff_counts[i].field_type == FIELD_VARCHAR)
-      max_calc_length=huff_counts[i].tree->height*huff_counts[i].max_length + huff_counts[i].length_bits +1;
+      max_calc_length+=huff_counts[i].tree->height*huff_counts[i].max_length + huff_counts[i].length_bits +1;
     else
       max_calc_length+=
 	(huff_counts[i].field_length - huff_counts[i].max_zero_fill)*