Fixed bug in allocation memory in key cache. (Memory was not properly aligned...

Fixed bug in allocation memory in key cache. (Memory was not properly aligned which cased core dumps on sparc CPU's)
Changed keycache variables to start with my_ instead of _my_

include/my_sys.h

@@ -219,9 +219,9 @@ extern my_bool my_charset_same(CHARSET_INFO *cs1, CHARSET_INFO *cs2);
 
 
 /* statistics */
-extern ulong	_my_cache_w_requests,_my_cache_write,_my_cache_r_requests,
-		_my_cache_read;
-extern ulong	_my_blocks_used,_my_blocks_changed;
+extern ulong	my_cache_w_requests, my_cache_write, my_cache_r_requests,
+		my_cache_read;
+extern ulong	my_blocks_used, my_blocks_changed;
 extern uint	key_cache_block_size;
 extern ulong	my_file_opened,my_stream_opened, my_tmp_file_created;
 extern my_bool	key_cache_inited, my_init_done;

myisam/mi_test2.c

@@ -646,13 +646,13 @@ int main(int argc, char *argv[])
 	  (long) range_records > (long) records*14/10+2)
       {
 	printf("mi_records_range for key: %d returned %ld; Should be about %ld\n",
-	       i, range_records, records);
+	       i, (long) range_records, (long) records);
 	goto end;
       }
       if (verbose && records)
       {
 	printf("mi_records_range returned %ld;  Exact is %ld  (diff: %4.2g %%)\n",
-	       range_records,records,
+	       (long) range_records, (long) records,
 	       labs((long) range_records-(long) records)*100.0/records);
 
       }
@@ -667,7 +667,7 @@ int main(int argc, char *argv[])
   {
     puts("Wrong info from mi_info");
     printf("Got: records: %ld  delete: %ld  i_keys: %d\n",
-	   info.records,info.deleted,info.keys);
+	   (long) info.records, (long) info.deleted,info.keys);
   }
   if (verbose)
   {
@@ -822,8 +822,8 @@ w_requests: %10lu\n\
 writes:     %10lu\n\
 r_requests: %10lu\n\
 reads:      %10lu\n",
-	   _my_blocks_used,_my_cache_w_requests, _my_cache_write,
-	   _my_cache_r_requests,_my_cache_read);
+	   my_blocks_used, my_cache_w_requests, my_cache_write,
+	   my_cache_r_requests, my_cache_read);
   }
   end_key_cache();
   if (blob_buffer)

myisam/sp_test.c

@@ -272,7 +272,7 @@ int run_test(const char *filename)
   create_key(key, nrecords*upd);
   print_key(key," INTERSECT\n");
   hrows=mi_records_in_range(file,0,key,0,HA_READ_MBR_INTERSECT,record+1,0,0);
-  printf("     %ld rows\n",hrows);
+  printf("     %ld rows\n", (long) hrows);
 
 
   if (mi_close(file)) goto err;

sql/mysqld.cc

@@ -4415,13 +4415,13 @@ struct show_var_st status_vars[]= {
   {"Handler_rollback",         (char*) &ha_rollback_count,      SHOW_LONG},
   {"Handler_update",           (char*) &ha_update_count,        SHOW_LONG},
   {"Handler_write",            (char*) &ha_write_count,         SHOW_LONG},
-  {"Key_blocks_used",          (char*) &_my_blocks_used,        SHOW_LONG_CONST},
-  {"Key_read_requests",        (char*) &_my_cache_r_requests,   SHOW_LONG},
-  {"Key_reads",                (char*) &_my_cache_read,         SHOW_LONG},
-  {"Key_write_requests",       (char*) &_my_cache_w_requests,   SHOW_LONG},
-  {"Key_writes",               (char*) &_my_cache_write,        SHOW_LONG},
-  {"Max_used_connections",     (char*) &max_used_connections,   SHOW_LONG},
-  {"Not_flushed_key_blocks",   (char*) &_my_blocks_changed,     SHOW_LONG_CONST},
+  {"Key_blocks_used",          (char*) &my_blocks_used,        SHOW_LONG_CONST},
+  {"Key_read_requests",        (char*) &my_cache_r_requests,   SHOW_LONG},
+  {"Key_reads",                (char*) &my_cache_read,         SHOW_LONG},
+  {"Key_write_requests",       (char*) &my_cache_w_requests,   SHOW_LONG},
+  {"Key_writes",               (char*) &my_cache_write,        SHOW_LONG},
+  {"Max_used_connections",     (char*) &max_used_connections,  SHOW_LONG},
+  {"Not_flushed_key_blocks",   (char*) &my_blocks_changed,     SHOW_LONG_CONST},
   {"Not_flushed_delayed_rows", (char*) &delayed_rows_in_use,    SHOW_LONG_CONST},
   {"Open_tables",              (char*) 0,                       SHOW_OPENTABLES},
   {"Open_files",               (char*) &my_file_opened,         SHOW_LONG_CONST},

sql/sql_test.cc

@@ -321,8 +321,8 @@ w_requests: %10lu\n\
 writes:     %10lu\n\
 r_requests: %10lu\n\
 reads:      %10lu\n",
-	 _my_blocks_used,_my_blocks_changed,_my_cache_w_requests,
-	 _my_cache_write,_my_cache_r_requests,_my_cache_read);
+	 my_blocks_used,my_blocks_changed,my_cache_w_requests,
+	 my_cache_write,my_cache_r_requests,my_cache_read);
   pthread_mutex_unlock(&THR_LOCK_keycache);
 
   if (thd)