Based on contribution from Google Inc.
This patch introduces a new parameter innodb_io_capacity to control the
rate at which master threads performs various tasks. The default value
is 200 and higher values imply more aggressive flushing and ibuf merges
from within the master thread.
This patch also changes the ibuf merge from synchronous to asynchronous.
Another minor change is not to force the master thread to wait for a
log flush to complete every second.

Approved by: Heikki

Windows will support PAUSE instruction by default.

1.0.4 contains patches based on contributions from Percona
and Sun Microsystems.

Remove unnecessary quotes and simplify plug.in.

Use PAUSE instruction inside spinloop if it is available.

The patch was originally developed by Mikael Ronstrom <mikael@mysql.com>
and can be found here:
http://bazaar.launchpad.net/%7Emysql/mysql-server/mysql-5.4/revision/2768
http://bazaar.launchpad.net/%7Emysql/mysql-server/mysql-5.4/revision/2771
http://bazaar.launchpad.net/%7Emysql/mysql-server/mysql-5.4/revision/2772
http://bazaar.launchpad.net/%7Emysql/mysql-server/mysql-5.4/revision/2774
http://bazaar.launchpad.net/%7Emysql/mysql-server/mysql-5.4/revision/2777
http://bazaar.launchpad.net/%7Emysql/mysql-server/mysql-5.4/revision/2799
http://bazaar.launchpad.net/%7Emysql/mysql-server/mysql-5.4/revision/2800

Approved by:	Heikki (rb://137)

Non functional change. s/Percona/Percona Inc./

(ISO 8859-1 encoded U+00AD SOFT HYPHEN) with a cheap ASCII substitute.

as this function is used within InnoDB Hot Backup.

with UNIV_HOTBACKUP.

Invoke os_get_os_version() at most once.

very similar to ha_search_and_delete_if_found().

This function is unused, but it could turn out to be a useful debugging aid.

to track down Issue #289.

or SET GLOBAL innodb_file_format_check=DEFAULT.

innodb_file_format.test: New test for innodb_file_format and
innodb_file_format_check.

innodb_file_format_name_validate(): Store the string in *save.
innodb_file_format_name_update(): Check the string again.

innodb_file_format_check_validate(): Store the string in *save.
innodb_file_format_check_update(): Check the string again.

Issue #282, rb://140 approved by Heikki Tuuri

Do not do arithmetics on void pointers.

Tolerate missing tablespaces (zip_size==ULINT_UNDEFINED).
buf_page_get_gen(): Add ut_ad(ut_is_2pow(zip_size)).

Issue #289, rb://136 approved by Sunny Bains

buf_fix_count.  This could explain Issue #156.
Tested by Michael.

Start prebuilt->trx before locking the table.  This should fix Issue #293
and could fix Issue #229.
Approved by Sunny (over IM).

SET GLOBAL innodb_commit_concurrency=DEFAULT. (Bug #45749)
When innodb_commit_concurrency is initially set nonzero,
DEFAULT would change it back to 0, triggering Bug #42101.
rb://139 approved by Heikki Tuuri.

This addresses Bug #44571 but does not fix it.
rb://135 approved by Sunny Bains.

Suggested by Marko.

Change the header file path from ../storage/innobase/include/
to ../include/. In the planned 5.1 + plugin release, the source
directory of the plugin will not be in storage/innobase.

Approved by: Heikki (IM)

for Hot Backup build (UNIV_HOTBACKUP defined).
This change should not affect !UNIV_HOTBACKUP build.

code bracketed between #ifdef UNIV_HOTBACKUP and #endif /* UNIV_HOTBACKUP */).
This change should not affect !UNIV_HOTBACKUP build.

ROW_FORMAT=DEFAULT, do not compare to get_row_type().
Without this change, fast index creation will be disabled
in recent versions of MySQL 5.1.