Merge branch 'PHP-7.1'

* PHP-7.1:
  More int->size_t and string overflow fixes

diff --cc Zend/zend_multiply.h
Simple merge

diff --cc ext/pgsql/pgsql.c
Simple merge

diff --cc ext/standard/math.c
Simple merge

diff --cc ext/standard/user_filters.c
Simple merge

diff --cc ext/xmlrpc/libxmlrpc/simplestring.c
Simple merge