Merge kpdesk.mysql.com:/home/thek/dev/mysql-5.0-maint

into  kpdesk.mysql.com:/home/thek/dev/mysql-5.1-maint


Makefile.am:
  Auto merged
client/mysqlbinlog.cc:
  Auto merged
client/mysqltest.c:
  Auto merged
include/config-win.h:
  Auto merged
include/my_global.h:
  Auto merged
include/my_pthread.h:
  Auto merged
include/mysql.h:
  Auto merged
include/typelib.h:
  Auto merged
mysql-test/Makefile.am:
  Auto merged
mysys/default.c:
  Auto merged
mysys/mf_iocache.c:
  Auto merged
mysys/my_seek.c:
  Auto merged
mysys/my_wincond.c:
  Auto merged
mysys/typelib.c:
  Auto merged
server-tools/instance-manager/guardian.cc:
  Auto merged
server-tools/instance-manager/instance.cc:
  Auto merged
sql/field.cc:
  Auto merged
sql/field.h:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/item_sum.h:
  Auto merged
sql/net_serv.cc:
  Auto merged
sql/opt_range.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/share/charsets/hebrew.xml:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_show.cc:
  Auto merged
strings/conf_to_src.c:
  Auto merged
vio/viossl.c:
  Auto merged

mysys/mf_iocache.c

@@ -342,7 +342,11 @@ my_bool reinit_io_cache(IO_CACHE *info, enum cache_type type,
       if (info->type == READ_CACHE)
       {
 	info->write_end=info->write_buffer+info->buffer_length;
-	info->seek_not_done=1;
+        /*
+          Trigger a new seek only if we have a valid
+          file handle.
+        */
+        info->seek_not_done= (info->file >= 0);
       }
       info->end_of_file = ~(my_off_t) 0;
     }