Fixed build failures found by buildbot

- Added suppression of warnings
- Fixed some test cases


BUILD/FINISH.sh:
  Added AM_EXTRA_MAKEFLAGS
BUILD/SETUP.sh:
  Added option --extra-makeflags
client/mysqldump.c:
  Added suppression
mysql-test/r/mysql.result:
  Updated results
mysql-test/r/mysql_upgrade.result:
  Updated results
mysql-test/r/partition_innodb_plugin.result:
  Updated results
mysql-test/r/partition_open_files_limit.result:
  Updated results
mysql-test/r/symlink.result:
  Updated results
mysql-test/suite/innodb/r/innodb-create-options.result:
  Updated results
mysql-test/suite/innodb/t/innodb-create-options.test:
  Don't print error message (as it's varies on different system)
mysql-test/t/mysql.test:
  Don't print error message (as it's varies on different system)
mysql-test/t/mysql_upgrade.test:
  Fixed checking of error number
mysql-test/t/partition_innodb_plugin.test:
  Don't print error message (as it's varies on different system)
plugin/semisync/semisync_master.cc:
  Added suppression
sql/ha_partition.cc:
  Added suppression
sql/item_subselect.cc:
  Added suppression
sql/multi_range_read.cc:
  Added suppression
sql/sql_parse.cc:
  Added suppression
sql/sql_select.cc:
  Added suppression
storage/innobase/handler/ha_innodb.cc:
  Removed not used variable
storage/maria/ma_delete.c:
  Added suppression
storage/maria/ma_key_recover.c:
  Added suppression
storage/maria/ma_write.c:
  Added suppression
strings/ctype-ucs2.c:
  Added suppression
support-files/compiler_warnings.supp:
  Added suppressions
unittest/mysys/my_vsnprintf-t.c:
  Fixed test case with %M to also work on Solaris

sql/sql_parse.cc

@@ -1325,7 +1325,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   {
     STATUS_VAR *current_global_status_var;      // Big; Don't allocate on stack
     ulong uptime;
-    uint length;
+    uint __attribute__((unused)) length;
     ulonglong queries_per_second1000;
     char buff[250];
     uint buff_len= sizeof(buff);