Temporarily disable this optimization causing too much trouble, kept in HEAD

MFH:
Memory usage optimisation. mysqlnd is not libmysql. mysqlnd does use the
Zend allocator, which means that is easier to hit memory_limit if you
have big stored (buffered) result sets.

MFH:
Memory usage optimisation. mysqlnd is not libmysql. mysqlnd does use the
Zend allocator, which means that is easier to hit memory_limit if you
have big stored (buffered) result sets. Before with libmysql you won't
hit memory_limit because libmysql uses libc's allocator and nothing is
checked. Now, with mysqlnd the situation is stricter and it is easier to
hit memory_limit. We try to optimize for big result sets. If a result set
is larger than 10 rows we will start freeing some data to keep memory usage
after 10 rows constant. This will help in the cases where a buffered result
set is scrolled forward only and just only once, or mysqlnd will need to
decode data from the network buffers again - yes, it is a trade-off between
CPU time and memory size. The best for big result sets is of course using
unbuffered queries - for comparison : 3 Million rows with buffered take
at least 180MB, with buffered you will stay at 3MB, and unbuffered will be
just 7-8% slower.

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MFH:
Hardwire function call instead of using callbacks. We don't actually need
callbacks, it was done for making 2 functions static, not to pollute the
global functions space but that had

MFH:
Hardwire function call instead of using callbacks. We don't actually need
callbacks, it was done for making 2 functions static, not to pollute the
global functions space but that had its price of 8 bytes overheat per
allocation, which is just too much. Also making the app member 32b instead
of 64b, which should save additional 4 byte, to the total of 12 byte per
allocation of a row buffer.

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MFH:Fix a valgrind warning as well as more trace log information

MFH:Fix a problem with cursors, which did not happen with unbuffered PS for
some reason. Double free of the data, which led to valgrind warnigns.
The fix actually optimizes the code in this c

MFH:Fix a problem with cursors, which did not happen with unbuffered PS for
some reason. Double free of the data, which led to valgrind warnigns.
The fix actually optimizes the code in this cases because the old code
used copy_ctor while the new one skips it because it is not needed.
Transferring data ownership and nulling works best, for PS where we
always copy the string from the result set, unlike the text protocol.

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MFH:
Fix a bug with mysqlnd_fetch_field(_direct()). With mysqlnd the optimised
function was called, which however, doesn't respect that during store the
raw data is not unpacked, to be la

MFH:
Fix a bug with mysqlnd_fetch_field(_direct()). With mysqlnd the optimised
function was called, which however, doesn't respect that during store the
raw data is not unpacked, to be lazy. The data is unpacked to zvals later,
during every row fetch. However, this way max_length won't be calculated
correctly. So, if a mysqlnd_fetch_field(_direct) call comes we need to
unpack everything and then calculate max_length...and that is expensive,
defies our lazy unpacking optimisation.

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- MFH: Removed UG(unicode) checks

MFH: Fix the build because the macro name has changed

MFH: Bump copyright year, 3 of 3.

MFH:
Get rid of many defines (which simplifies the code a lot),
as well as uint->unsigned int

MFB:
64bit fixes:
- fixes to sprintf modifiers, cleaning warnings
- use _t types, like uint64_t instead of uint64, thus skipping series of
typedefs.

MFH:
Fix overusage of memory when the result set is empty. Then no memory will be
allocated compared to before. Also grow (realloc) the rset with 10% instead
of 33% - more reallocs but be

MFH:
Fix overusage of memory when the result set is empty. Then no memory will be
allocated compared to before. Also grow (realloc) the rset with 10% instead
of 33% - more reallocs but better memory usage. Of course later theres is a
realloc to shrink the rset t ofree it from unused rows but its better to
to eat too much at once.

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Fix a bug that let PDO fail. It has been long fixed, but locally. Now I know
what it fixes :)

Update mysqlnd

Update ext/mysql's and ext/mysqli's tests
Add mysqli_stmt_more_result()/mysqli_stmt_next_result(), but only in
mysqlnd builds as libmysql doesn't support this feature.

MFB: Update CVS from the development tree

Fix memory leak

Update mysqlnd - fix bg_store

MFH: Fix a compatibility bug and a failing test

Pconnect working with mysqli_real_connect(). To less failing tests.

Fix a leak, memory warning and failing test case.

MFH: fix win32 build

Fix the build, add a missing file

some config.w32 fixes
moved mysqlnd's block allocator to a separate file and also now
it's part of the connection, no MT problems.

More optimizations - less MM calls
Clearly separated fetching (physical reading) from decoding phases (data
interpretation). Threaded fetching added but disabled as needs more work for
Wi

More optimizations - less MM calls
Clearly separated fetching (physical reading) from decoding phases (data
interpretation). Threaded fetching added but disabled as needs more work for
Windows. For Linux needs some touches to add pthreads if this is enabled,
probably with a compile-time switch.
The code reorganisation makes it easy to add also async API, similar to
cURL's one.

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