add NEWS entry for VM generator renewal [ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62431 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-02-16 08:51:23 +00:00 · 2018-02-16 08:51:23 +00:00 · 62916542b2
--- a/2
+++ b/2
@ -54,4 +54,6 @@ with all sufficient information, see the ChangeLog file or Redmine

 * `--jit` option to enable JIT compiler is added. [Feature #14235] [experimental]

+* VM generator script renewal; makes the generated VM more optimized. [GH-1779]
+
 === Miscellaneous changes