MDEV-5800 InnoDB support for indexed vcols

  * remove old 5.2+ InnoDB support for virtual columns
  * enable corresponding parts of the innodb-5.7 sources
  * copy corresponding test cases from 5.7
  * copy detailed Alter_inplace_info::HA_ALTER_FLAGS flags from 5.7
     - and more detailed detection of changes in fill_alter_inplace_info()
  * more "innodb compatibility hooks" in sql_class.cc to
     - create/destroy/reset a THD (used by background purge threads)
     - find a prelocked table by name
     - open a table (from a background purge thread)

  * different from 5.7:
    - new service thread "thd_destructor_proxy" to make sure all THDs are
      destroyed at the correct point in time during the server shutdown
    - proper opening/closing of tables for vcol evaluations in
       + FK checks (use already opened prelocked tables)
       + purge threads (open the table, MDLock it, add it to tdc, close
         when not needed)
    - cache open tables in vc_templ
    - avoid unnecessary allocations, reuse table->record[0] and table->s->default_values
    - not needed in 5.7, because it overcalculates:
      + tell the server to calculate vcols for an on-going inline ADD INDEX
      + calculate vcols for correct error messages

  * update other engines (mroonga/tokudb) accordingly

1 files changed, 3 insertions, 3 deletions

diff --git a/mysql-test/suite/innodb/r/innodb_bug12400341.result b/mysql-test/suite/innodb/r/innodb_bug12400341.result
index 3bb786c4654..b402af84231 100644
--- a/mysql-test/suite/innodb/r/innodb_bug12400341.result
+++ b/mysql-test/suite/innodb/r/innodb_bug12400341.result
@@ -14,17 +14,17 @@ innodb_file_per_table	ON
 drop database if exists mysqltest;
 create database mysqltest;
 CREATE TABLE mysqltest.transtable (id int unsigned NOT NULL PRIMARY KEY, val int DEFAULT 0) ENGINE=InnoDB;
-select count(*) from information_schema.processlist;
+select count(*) from information_schema.processlist where command != 'Daemon';
 count(*)
 33
 connection default;
 CREATE TABLE mysqltest.testtable (id int unsigned not null primary key) ENGINE=InnoDB;
 ERROR HY000: Can't create table `mysqltest`.`testtable` (errno: 177 "Too many active concurrent transactions")
-select count(*) from information_schema.processlist;
+select count(*) from information_schema.processlist where command != 'Daemon';
 count(*)
 33
 connection default;
-select count(*) from information_schema.processlist;
+select count(*) from information_schema.processlist where command != 'Daemon';
 count(*)
 33
 drop database mysqltest;