Merge branch 'PHP-7.0' into PHP-7.1

diff --cc NEWS
index ff378519c03901d3193154e97e775803e6138a22,eecf1e50a6b1b012b08c685265fc0b9aa28a5723..03d095e3de79747e04b7a554f3877e5b01f814dd
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -7,10 -7,9 +7,13 @@@ PH
      properties). (Laruence)
    . Fixed misparsing of abstract unix domain socket names. (Sara)
  
 +- Date:
 +  . Fixed bug #74639 (implement clone for DatePeriod and DateInterval).
 +    (andrewnester)
 +
+ - Intl:
+   . Fixed bug #73473 (Stack Buffer Overflow in msgfmt_parse_message). (libnex)
+ 
  - Mbstring:
    . Add oniguruma upstream fix (CVE-2017-9224, CVE-2017-9226, CVE-2017-9227,
      CVE-2017-9228, CVE-2017-9229) (Remi, Mamoru TASAKA)