Merge branch 'master' of https://git.php.net/repository/php-src

# By Adam Harvey (2) and others
# Via Adam Harvey (2) and others
* 'master' of https://git.php.net/repository/php-src:
  Implement variadic function syntax
  Added function opcache_compile_file() to load PHP scripts into cache without execution.
  Fixed issue #135 (segfault in interned strings if initial memory is too low)
  Fix typo: HTTP_ROW_POST_DATA → HTTP_RAW_POST_DATA.
  Make message and format arguments const char * to avoid build warning about invalid cast.
  Copy dba_*() keys before converting to string.