Fix for crummy compiler that didn't udnerstand for declaration. Another fix...

Fix for crummy compiler that didn't udnerstand for declaration. Another fix for example storage engine to pass, not skip, test.

mysql-test/r/have_exampledb.require

 Variable_name	Value
-have_exampledb	YES
+have_example_engine	YES

sql/examples/ha_archive.cc

@@ -528,6 +528,7 @@ error:
 int ha_archive::write_row(byte * buf)
 {
   z_off_t written;
+  Field_blob **field;
   DBUG_ENTER("ha_archive::write_row");
 
   statistic_increment(ha_write_count,&LOCK_status);
@@ -543,7 +544,7 @@ int ha_archive::write_row(byte * buf)
     We should probably mark the table as damagaged if the record is written
     but the blob fails.
   */
-  for (Field_blob **field=table->blob_field ; *field ; field++)
+  for (field= table->blob_field ; *field ; field++)
   {
     char *ptr;
     uint32 size= (*field)->get_length();