Fixes for last pull

libmysqld/lib_sql.cc:
  Fixed compilation error in embedded library (from last pull)
sql/field.cc:
  Safer timestamp year checking (as 1969 can be in timestamp)

libmysqld/lib_sql.cc

@@ -277,6 +277,12 @@ static bool check_user(THD *thd,enum_server_command command, const char *user,
 }
 
 
+void THD::clear_error()
+{
+  net.last_error[0]= 0;
+  net.last_errno= 0;
+}
+
 /*
   Make a copy of array and the strings array points to
 */

sql/field.cc

@@ -2589,7 +2589,7 @@ void Field_timestamp::store(longlong nr)
   {
     long not_used;
     
-    if (l_time.year >= TIMESTAMP_MAX_YEAR || l_time.year < 1900+YY_PART_YEAR)
+    if (l_time.year >= TIMESTAMP_MAX_YEAR || l_time.year < 1900+YY_PART_YEAR-1)
     {
       current_thd->cuted_fields++;
       timestamp=0;