Update NEWS
added appropriate exception handling flag to ext\intl

According to the doc page
http://msdn.microsoft.com/en-us/library/1deeycx5.aspx
it's appropriate as none of the extern C functions do throw
exceptions. This also fixes the warning C4530.
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  added appropriate exception handling flag to ext\intl
  Update NEWS