Fixed memory reference errors found by valgrind

sql/ha_federated.cc:
  Change mode to -rw-rw-r--
myisam/mi_create.c:
  Ensure that all referenced memory is reset
mysql-test/r/type_timestamp.result:
  More tests
mysql-test/t/func_compress.test:
  Added comment
mysql-test/t/type_timestamp.test:
  More tests
sql/field.h:
  Count number of varchars in table
sql/item_cmpfunc.cc:
  Safety fix (to avoid warning from valgrind)
sql/opt_range.cc:
  Simple optimzation
sql/sql_acl.cc:
  Safety fix (to avoid warning from valgrind)
sql/sql_parse.cc:
  Safety fix for prepared statements
sql/sql_show.cc:
  Move variable declarations first in function
  Remove hidden variable (it)
  Remove accessing freed memory (table_list->table_name)
sql/sql_update.cc:
  Compare records with varchars correctly
sql/table.cc:
  Safety fix when running with purify/valgrind
  Fix wrong memory reference in case of errors
sql/table.h:
  Added counting of varchar fields
strings/ctype-mb.c:
  Fill max_str properly

1 files changed, 3 insertions, 1 deletions

diff --git a/myisam/mi_create.c b/myisam/mi_create.c
index 0164555272d..1f6ed87182c 100644
--- a/myisam/mi_create.c
+++ b/myisam/mi_create.c
@@ -630,10 +630,12 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
     {
       HA_KEYSEG sseg;
       sseg.type=SPTYPE;
-      sseg.language= 7;
+      sseg.language= 7;                         /* Binary */
       sseg.null_bit=0;
       sseg.bit_start=0;
       sseg.bit_end=0;
+      sseg.bit_length= 0;
+      sseg.bit_pos= 0;
       sseg.length=SPLEN;
       sseg.null_pos=0;
       sseg.start=j*SPLEN;