* lang_ml/parsing/parse_ml.ml:
sgrep/spatch: fuzzy support for php too

Summary:
This patch adds support for PHP for the new generalized sgrep/spatch
which allows transformations not only for expressions but also
statement, function declarations, etc.

Test Plan:
$ cat ~/test.spatch
  function getMaintainers
- ()
+ (): Vector<string>
 {
  return
- array(
+ Vector {
...
- )
+ }
  ;
 }

$ git grep -l getMaintainers  | xargs ~/pfff/spatch -lang phpfuzzy -f ~/test.spatch
--- /data/users/pad/www-git/flib/site/web/time_spent/TimeSpentReportController.php	2013-05-03 15:46:14.000000000 -0700
+++ /tmp/trans-27729-c5ce46.spatch	2013-06-14 16:18:53.000000000 -0700
@@ -44,7 +44,7 @@
       ->flush();
   }

-  protected function getMaintainers() {
-    return array('jordanfrank');
+  protected function getMaintainers(): Vector<string> {
+    return Vector {'jordanfrank'};
   }
 }

...

Reviewers: amenghra, julienv, jiaol, pieter, erling, mathieubaudet, glevi

Reviewed By: pieter

Differential Revision: https://phabricator.fb.com/D850806