Log Message:
lang/php56: udate to 5.6.40

10 Jan 2019, PHP 5.6.40

- GD:
  . Fixed bug #77269 (efree() on uninitialized Heap data in imagescale leads to
    use-after-free). (cmb)
  . Fixed bug #77270 (imagecolormatch Out Of Bounds Write on Heap). (cmb)

- Mbstring:
  . Fixed bug #77370 (Buffer overflow on mb regex functions - fetch_token). (Stas)
  . Fixed bug #77371 (heap buffer overflow in mb regex functions
    - compile_string_node). (Stas)
  . Fixed bug #77381 (heap buffer overflow in multibyte match_at). (Stas)
  . Fixed bug #77382 (heap buffer overflow due to incorrect length in
    expand_case_fold_string). (Stas)
  . Fixed bug #77385 (buffer overflow in fetch_token). (Stas)
  . Fixed bug #77394 (Buffer overflow in multibyte case folding - unicode). (Stas)
  . Fixed bug #77418 (Heap overflow in utf32be_mbc_to_code). (Stas)

- Phar:
  . Fixed bug #77247 (heap buffer overflow in phar_detect_phar_fname_ext). (Stas)

- Xmlrpc:
  . Fixed bug #77242 (heap out of bounds read in xmlrpc_decode()). (cmb)
  . Fixed bug #77380 (Global out of bounds read in xmlrpc base64 code). (Stas)