Merge branch 'PHP-7.1' into PHP-7.2

Author: bukka

.travis.yml

@@ -50,6 +50,8 @@ before_script:
     - ccache --version
     - ccache --zero-stats
     - export USE_CCACHE=1
+    # Enable IPv6
+    - sudo sh -c 'echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6'
     # Compile PHP
     - ./travis/compile.sh
     # Setup Extensions