mysql_client uses some inline assembly code to switch thread stacks.
This works, however tools that perform backtrace get confused to fix
this we write a specific constant to signify bottom of stack. This
constant is needed when compiling with CLang as well.

Also, implement MDEV-11027 a little differently from 5.5:

recv_sys_t::report(ib_time_t): Determine whether progress should
be reported.

recv_apply_hashed_log_recs(): Rename the parameter to last_batch.

This is essentially a backport of the 10.0
commit 203f4d41
that fixes a bug and silences a GCC 6.3.0 warning
about a left shift of a signed integer.

Missing parenthesis in a macro definition caused wrong operation
in the Query_cache::send_result_to_client() statement
   thd->query_plan_flags= (thd->query_plan_flags & ~QPLAN_QC_NO) | QPLAN_QC;

This would expand to
   thd->query_plan_flags= (thd->query_plan_flags & ~1) << 6 | 1 << 5;

which would shift the flags by 6 and clear an unrelated flag, instead
of clearing the flag (1 << 6).

Provide more useful progress reporting of crash recovery.

recv_sys_t::progress_time: The time of the last report.

recv_scan_print_counter: Remove.

log_group_read_log_seg(): After after each I/O request,
report progress if needed.

recv_apply_hashed_log_recs(): At the start of each batch,
if there are pages to be recovered, issue a message.

The C++ standard does not allow references to be NULL.
Assign the return value of THD::alloc() to a pointer,
not to a reference.

        Server audit plugin version updated.

This reverts commit fa59ac50.

dir_per_db_rename_to_nenexisting_schema: mysqltest fails with no output
percona_kill_idle_trx_tokudb: MariaDB doesn't support kill_idle_trx var
for all SE.

Probably the result is due to a bug fixed on their server. Restoring old
behaviour for now.

TokuDB testsuite makes use of includes not found in our default 10.0.
Cherry pick them from Percona Server's include directory.

Disabling the cond guards during the creation of Tricond Item for
constant and NULL left expression items

my_readline can fail due to missing file. Make my_readline report this
condition separately so that we can catch it and report an appropriate
error message to the user.

The function posix_fallocate() as well as the Linux system call
fallocate() can return EINTR when the operation was interrupted
by a signal. In that case, keep retrying the operation, except
if InnoDB shutdown has been initiated.

The function posix_fallocate() as well as the Linux system call
fallocate() can return EINTR when the operation was interrupted
by a signal. In that case, keep retrying the operation, except
if InnoDB shutdown has been initiated.

For the same reason as removing binlog rotation on Debian.

Rotating binary/relay logs can cause interuption to the processing
on the server. Binary and relay logs have their own mechanism already
for not getting out of control (expire_logs_days).

By no longer rotating binary and relay logs log rotation is limited to
the following logs:
* error log
* general log
* slow query log

Writing these to the binary log would cause any logrotation on the
slave to occur twice, once due to this and another due to the log-
rotate script on the slave. Now --local is passed to mysqladmin to
prevent this duplication.

Add the following options to mysqladmin

+  flush-binary-log        Flush binary log
+  flush-engine-log        Flush engine log(s)
+  flush-error-log         Flush error log
+  flush-general-log       Flush general log
+  flush-relay-log         Flush relay log
+  flush-user-resources    Flush user resources

  modified:   storage/connect/ha_connect.cc

Add conditional SE exception support
  modified:   storage/connect/json.cpp
  modified:   storage/connect/plgdbutl.cpp

Change %p in %x in some sprintf functions.
This to avoid some compiler warnings.
  modified:   storage/connect/tabwmi.cpp
  modified:   storage/connect/tabxml.cpp
  modified:   storage/connect/value.h

Add JavaWrappers.jar to the class path
  modified:   storage/connect/jdbconn.cpp

Fix wrong declare (char *buf[256]; --> char  buf[256];)
  modified:   storage/connect/xindex.cpp