Fixed bugs with trimming of spaces

MFH: fix #39850 (SplFileObject throws contradictory/wrong error messages when trying to open "php://wrong")

Fixed bug #39832 (SOAP Server: parameter not matching the WSDL specified type are set to 0)

Fixed random generation of cookies and canaries

Filter fixes:
Fixed possible double encoding problem with sanitizing filters
Make use of space-strict strip_tags() function

Fixed bug #39779 (Enable AUTH PLAIN mechanism in underlaying libc-client).

Fixed bug #39846 (Invalid IPv4 treated as valid).

Added internal heap protection
. safe unlinking
. cookies
. canary protection (debug build only)

5.2.1RC1

Fixed bug #39816 (apxs2filter ignores httpd.conf & .htaccess php config
settings).

Fixed bug #39201 (Possible crash in Apache 2 with 413 ErrorHandler).

Fixed bug #39797 (virtual() does not reset changed INI settings).

MFH: fix #39795 (build fails on AIX because crypt_r() uses different data struct)

Fixed bug #39782 (setTime() on a DateTime constructed with a Weekday
yields incorrect results).

Fixed bug #39787 (PHP doesn't work with Apache 2.3).

Fixed bug #39791 (Crash in strtotime() on overly long relative date
multipliers).

- #39286 entry

- #39508, add test (imagefill crashes with small image)

- #39780 entry

BFN

MFH: sys_get_temp_dir()

Fixed bug #29840 (is_executable() does not honor safe_mode_exec_dir
setting).

BFN

MFH: fix #39732 (oci_bind_array_by_name doesn't work on Solaris 64bit)

Fixed bug #39759 (Can't use stored procedures fetching multiple result
sets in pdo_mysql).