lang/php74: update to 7.4.2

Update php74 to 7.4.2 (PHP 7.4.2).

23 Jan 2020, PHP 7.4.2

- Core:
  . Preloading support on Windows has been disabled. (Nikita)
  . Fixed bug #79022 (class_exists returns True for classes that are not ready
    to be used). (Laruence)
  . Fixed bug #78929 (plus signs in cookie values are converted to spaces).
    (Alexey Kachalin)
  . Fixed bug #78973 (Destructor during CV freeing causes segfault if opline
    never saved). (Nikita)
  . Fixed bug #78776 (Abstract method implementation from trait does not check
    "static"). (Nikita)
  . Fixed bug #78999 (Cycle leak when using function result as temporary).
    (Dmitry)
  . Fixed bug #79008 (General performance regression with PHP 7.4 on Windows).
    (cmb)
  . Fixed bug #79002 (Serializing uninitialized typed properties with __sleep
    makes unserialize throw). (Nikita)

- CURL:
  . Fixed bug #79033 (Curl timeout error with specific url and post). (cmb)
  . Fixed bug #79063 (curl openssl does not respect PKG_CONFIG_PATH). (Nikita)

- Date:
  . Fixed bug #79015 (undefined-behavior in php_date.c). (cmb)

- DBA:
  . Fixed bug #78808 ([LMDB] MDB_MAP_FULL: Environment mapsize limit reached).
    (cmb)

- Exif:
  . Fixed bug #79046 (NaN to int cast undefined behavior in exif). (Nikita)

- Fileinfo:
  . Fixed bug #74170 (locale information change after mime_content_type).
    (Sergei Turchanov)

- GD:
  . Fixed bug #79067 (gdTransformAffineCopy() may use unitialized values). (cmb)
  . Fixed bug #79068 (gdTransformAffineCopy() changes interpolation method).
    (cmb)

- Libxml:
  . Fixed bug #79029 (Use After Free's in XMLReader / XMLWriter). (Laruence)

- Mbstring:
  . Fixed bug #79037 (global buffer-overflow in `mbfl_filt_conv_big5_wchar`).
    (CVE-2020-7060) (Nikita)

- OPcache:
  . Fixed bug #78961 (erroneous optimization of re-assigned $GLOBALS). (Dmitry)
  . Fixed bug #78950 (Preloading trait method with static variables). (Nikita)
  . Fixed bug #78903 (Conflict in RTD key for closures results in crash).
    (Nikita)
  . Fixed bug #78986 (Opcache segfaults when inheriting ctor from immutable
    into mutable class). (Nikita)
  . Fixed bug #79040 (Warning Opcode handlers are unusable due to ASLR). (cmb)
  . Fixed bug #79055 (Typed property become unknown with OPcache file cache).
    (Nikita)

- Pcntl:
  . Fixed bug #78402 (Converting null to string in error message is bad DX).
    (SATŌ Kentarō)

- PDO_PgSQL:
  . Fixed bug #78983 (pdo_pgsql config.w32 cannot find libpq-fe.h). (SATŌ
    Kentarō)
  . Fixed bug #78980 (pgsqlGetNotify() overlooks dead connection). (SATŌ
    Kentarō)
  . Fixed bug #78982 (pdo_pgsql returns dead persistent connection). (SATŌ
    Kentarō)

- Session:
  . Fixed bug #79091 (heap use-after-free in session_create_id()). (cmb,
    Nikita)
  . Fixed bug #79031 (Session unserialization problem). (Nikita)

- Shmop:
  . Fixed bug #78538 (shmop memory leak). (cmb)

- Sqlite3:
  . Fixed bug #79056 (sqlite does not respect PKG_CONFIG_PATH during
    compilation). (Nikita)

- Spl:
  . Fixed bug #78976 (SplFileObject::fputcsv returns -1 on failure). (cmb)

- Standard:
  . Fixed bug #79099 (OOB read in php_strip_tags_ex). (CVE-2020-7059). (cmb)
  . Fixed bug #79000 (Non-blocking socket stream reports EAGAIN as error).
    (Nikita)
  . Fixed bug #54298 (Using empty additional_headers adding extraneous CRLF).
    (cmb)

(taca)