Log Message:
Update php55 to 5.5.35.

pkgsrc change: Fix build problem on Linux noted by Matthias Ferdinand on
pkgsrc-users@.

28 Apr 2016, PHP 5.5.35

- BCMath:
  . Fix bug #72093 (bcpowmod accepts negative scale and corrupts _one_
    definition). (Stas)

- Exif:
  . Fix bug #72094 (Out of bounds heap read access in exif header
    processing). (Stas)

- GD:
  . Fix bug #71912 (libgd: signedness vulnerability). (Stas)

- Intl:
  . Fix bug #72061 (Out-of-bounds reads in zif_grapheme_stripos with negative
    offset). (Stas)

- XML:
  . Fix bug #72099 (xml_parse_into_struct segmentation fault). (Stas)