If the default character set was set to non-latin1 then the collation order of DATA_CHAR and DATA_VARCHAR was not defined, and foreign key system tables did not work, because they contain DATA_VARCHAR columns
Small improvements
row0mysql.c:
Small improvements + fix the ALTER TABLE problem by introducing a lazy drop table it can use
ha_innobase.cc:
Some fine-tuning of optimization
Print progress info of the applying log records to the database phase in recovery
srv0srv.c:
Do buffer pool flush and checkpoints more often to make recovery faster
ut0ut.c Merge changes in InnoDB-3.23.43b
trx0purge.c Merge changes in InnoDB-3.23.43b
trx0rec.c Merge changes in InnoDB-3.23.43b
trx0trx.c Merge changes in InnoDB-3.23.43b
trx0undo.c Merge changes in InnoDB-3.23.43b
thr0loc.c Merge changes in InnoDB-3.23.43b
sync0arr.c Merge changes in InnoDB-3.23.43b
sync0rw.c Merge changes in InnoDB-3.23.43b
sync0sync.c Merge changes in InnoDB-3.23.43b
srv0srv.c Merge changes in InnoDB-3.23.43b
srv0start.c Merge changes in InnoDB-3.23.43b
row0ins.c Merge changes in InnoDB-3.23.43b
row0mysql.c Merge changes in InnoDB-3.23.43b
row0purge.c Merge changes in InnoDB-3.23.43b
row0sel.c Merge changes in InnoDB-3.23.43b
row0umod.c Merge changes in InnoDB-3.23.43b
row0upd.c Merge changes in InnoDB-3.23.43b
row0vers.c Merge changes in InnoDB-3.23.43b
rem0cmp.c Merge changes in InnoDB-3.23.43b
que0que.c Merge changes in InnoDB-3.23.43b
pars0opt.c Merge changes in InnoDB-3.23.43b
pars0pars.c Merge changes in InnoDB-3.23.43b
lexyy.c Merge changes in InnoDB-3.23.43b
pars0grm.c Merge changes in InnoDB-3.23.43b
page0page.c Merge changes in InnoDB-3.23.43b
os0file.c Merge changes in InnoDB-3.23.43b
mtr0log.c Merge changes in InnoDB-3.23.43b
mem0pool.c Merge changes in InnoDB-3.23.43b
log0log.c Merge changes in InnoDB-3.23.43b
log0recv.c Merge changes in InnoDB-3.23.43b
lock0lock.c Merge changes in InnoDB-3.23.43b
ibuf0ibuf.c Merge changes in InnoDB-3.23.43b
fil0fil.c Merge changes in InnoDB-3.23.43b
dict0crea.c Merge changes in InnoDB-3.23.43b
dict0dict.c Merge changes in InnoDB-3.23.43b
dict0load.c Merge changes in InnoDB-3.23.43b
dict0mem.c Merge changes in InnoDB-3.23.43b
data0data.c Merge changes in InnoDB-3.23.43b
data0type.c Merge changes in InnoDB-3.23.43b
buf0buf.c Merge changes in InnoDB-3.23.43b
buf0lru.c Merge changes in InnoDB-3.23.43b
btr0btr.c Merge changes in InnoDB-3.23.43b
btr0cur.c Merge changes in InnoDB-3.23.43b
btr0pcur.c Merge changes in InnoDB-3.23.43b
btr0sea.c Merge changes in InnoDB-3.23.43b
data0type.ic Merge changes in InnoDB-3.23.43b
dict0dict.ic Merge changes in InnoDB-3.23.43b
mtr0mtr.ic Merge changes in InnoDB-3.23.43b
row0upd.ic Merge changes in InnoDB-3.23.43b
sync0ipm.ic Merge changes in InnoDB-3.23.43b
sync0rw.ic Merge changes in InnoDB-3.23.43b
sync0sync.ic Merge changes in InnoDB-3.23.43b
trx0rseg.ic Merge changes in InnoDB-3.23.43b
btr0pcur.ic Merge changes in InnoDB-3.23.43b
buf0buf.ic Merge changes in InnoDB-3.23.43b
data0data.ic Merge changes in InnoDB-3.23.43b
row0upd.h Merge changes in InnoDB-3.23.43b
srv0srv.h Merge changes in InnoDB-3.23.43b
sync0arr.h Merge changes in InnoDB-3.23.43b
sync0rw.h Merge changes in InnoDB-3.23.43b
sync0sync.h Merge changes in InnoDB-3.23.43b
trx0trx.h Merge changes in InnoDB-3.23.43b
ut0mem.h Merge changes in InnoDB-3.23.43b
data0data.h Merge changes in InnoDB-3.23.43b
data0type.h Merge changes in InnoDB-3.23.43b
db0err.h Merge changes in InnoDB-3.23.43b
dict0crea.h Merge changes in InnoDB-3.23.43b
dict0dict.h Merge changes in InnoDB-3.23.43b
dict0load.h Merge changes in InnoDB-3.23.43b
dict0mem.h Merge changes in InnoDB-3.23.43b
dict0types.h Merge changes in InnoDB-3.23.43b
fil0fil.h Merge changes in InnoDB-3.23.43b
ibuf0ibuf.h Merge changes in InnoDB-3.23.43b
lock0lock.h Merge changes in InnoDB-3.23.43b
log0log.h Merge changes in InnoDB-3.23.43b
mtr0mtr.h Merge changes in InnoDB-3.23.43b
rem0cmp.h Merge changes in InnoDB-3.23.43b
row0ins.h Merge changes in InnoDB-3.23.43b
row0mysql.h Merge changes in InnoDB-3.23.43b
btr0cur.h Merge changes in InnoDB-3.23.43b
btr0pcur.h Merge changes in InnoDB-3.23.43b
btr0sea.h Merge changes in InnoDB-3.23.43b
buf0buf.h Merge changes in InnoDB-3.23.43b
sql_table.cc Merge changes in InnoDB-3.23.43b
sql_db.cc Merge changes in InnoDB-3.23.43b
ha_innobase.cc Merge changes in InnoDB-3.23.43b
handler.cc Merge changes in InnoDB-3.23.43b
ha_innobase.h Merge changes in InnoDB-3.23.43b
handler.h Merge changes in InnoDB-3.23.43b
srv0start.c Support raw disk as a data file
srv0srv.c Support raw disk as a data file
ha_innobase.cc Some error messages and support raw disk as a data file
srv0srv.c One can now specify innodb_unix_file_flush_method in my.cnf
srv0start.c One can now specify innodb_unix_file_flush_method in my.cnf
ha_innobase.cc One can now specify innodb_unix_file_flush_method in my.cnf
ha_innobase.h One can now specify innodb_unix_file_flush_method in my.cnf
mysqld.cc One can now specify innodb_unix_file_flush_method in my.cnf
log0log.c Change Innobase text to InnoDB
srv0start.c Change Innobase text to InnoDB
srv0srv.c Change Innobase text to InnoDB
ha_innobase.cc Change Innobase text to InnoDB
os0thread.c Set created thread priority to QUERY_PRIOR if specified
row0mysql.c Drop table removes locks on the table, error handling changed
row0ins.c Insert now always sets a shared lock on a duplicate or suspected duplicate record
lock0lock.h Can remove locks from a table to be dropped
lock0lock.c Can remove locks from a table to be dropped
srv0srv.c Try to do log flush every second
srv0start.c No need for a slash at the end of dir
trx0trx.h Added an IGNORE option field to trx handle
trx0trx.c Added an IGNORE option field to trx handle
ha_innobase.h Added last_query_id field to handle
ha_innobase.cc Fix drop table hang, roll-forward etc.