MFH: fix #35430 (PDO crashes on incorrect FETCH_FUNC use)

Doh, need to canonicalize parameter names (by prefixing with :) before
attempting to remap them to positional args.

Bug: when stringify fetch mode is on, and the driver returns a string instead
of a stream for a LOB parameter, PDO would incorrectly return NULL for that
column.

Fix for #35332.
The problem is caused by the user mixing positional and named parameters.
PDO was blindly adding the parameters, unaware that the same parameters were
already allocated by

Fix for #35332.
The problem is caused by the user mixing positional and named parameters.
PDO was blindly adding the parameters, unaware that the same parameters were
already allocated by position.

What we do now is register the parameter with the driver before adding it to
any hash. This gives the driver an opportunity to normalize the name and
parameter number. PDO can then ensure that only one entry is occupied in the
hash for a given parameter.

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Fixed bug #35358 (Incorrect error messages for PDO class constants).

Closes PECL #5944; binding an invalid parameter can lead to segfaults.
Modified patch provided by curt@php.net.

Fixed bug #35135 (PDOStatment without related PDO object may crash).

- Fix remaining memleaks
# all tests pass for me now for the first time in:
# pgsql, mysql, sqlite, sqlite2

fix misinterpretation of data when overriding types via bindColumn.
Very slightly modified patch from Marcus.

improve test portability.
improve infrastructure for LOB support.

- Fix memleak

Closes PECL Bug #5772; FETCH_FUNC broken for mixed case function names

Closes PECL #5809; PDOStatement::execute(array(...)) would modify its args.
It should behave like bindValue() not bindParam().

Fixed compiler warning

MFH: Fixed bug #34809 (FETCH_INTO in PDO crashes without a destination object).

- MFH Fixed Bug #34590 User defined PDOStatement class can't implement
methods
- Reimplement Traversable interface
# If there is a problem with this i need a backtrace. As far as i can

- MFH Fixed Bug #34590 User defined PDOStatement class can't implement
methods
- Reimplement Traversable interface
# If there is a problem with this i need a backtrace. As far as i can
# tell by gdb/valgrind/logic there is no error here. But missuse leads to
# the same error report casing the exclusion of interface Traversable.

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When populating bound columns, override the returned type with the type
specified by the user in their bind.

remove traversable interface; apparently it's not enough, and this stuff is too
magical to figure out wtf should be added.

closes PECL #5027; PDO_FETCH_NAMED not handled via setFetchMode().

add __sleep and __wakeup functions to prevent serialize/deserialize from being used on PDO objects. Refs PECL #5217

Add PDOStatement::bindValue(), which is similar to bindParam(), except that
it binds the value of the zval at the time it is called, rather than keeping
a reference to the zval and taking the

Add PDOStatement::bindValue(), which is similar to bindParam(), except that
it binds the value of the zval at the time it is called, rather than keeping
a reference to the zval and taking the value at execute() time.

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MFH. Protect against underflow - refs http://pecl.php.net/bugs/bug.php?id=5193

Fixed memory leak.

add sanity checks

- Add missing part to make colon in parameter binding optional