Merge branch 'PHP-7.2'

* PHP-7.2:
  ext/sodium: untab tests
  ext/sodium: import secretstream test
  ext/sodium: sodium_compare() is always available
  ext/sodium: fix funky indentation
  ext/sodium: move pwhash_scrypt() after pwhash()
  ext/sodium: checks for crypto_box_SEALBYTES are not required
  ext/sodium: explicitly include <string.h>
  ext/sodium: zend_parse_parameters -> zend_parse_parameters_throw
  ext/sodium: fix funky indent on zend_parse_parameters_throw() calls
  ext/sodium: import bindings for secretstream
  ext/sodium: add crypto_pwhash_str_needs_rehash()
  ext/sodium: +base64 codecs (timing-safe)
  ext/sodium: add arginfo definitions that will be required later
  ext/sodium: sort prototypes