Vector of unions for TS/JS and PHP (#4404)

* Eclipse ignore

* TypeScript support

* Prefixing enums

* Test results

* Merged JS and TS generators

* Fixed AppVeyor build problems

* Fixed more AppVeyor build problems

* Fixed more AppVeyor build problems

* Changed TS flag to options struct

* Storing options by value

* Removed unneeded const

* Re-export support for unions

* Uint support

* Casting bools to numbers for mutation

* TS shell tests

* Reverted generates js test file to original version

* Backing up js tests and properly generating test data

* Not importing flatbuffers for TS test generation

* Not overwriting generated js for tests

* AppVeyor test fixes

* Generating the most strict TS code possible

* Not returning null when creating vectors

* Not returning null from struct contructors

* Vector of unions for ts/js

* Sanity check for languages

* Indentation fix + output test files

* Vectors of unions for php

* Fixes to union vector handling + tests

php/Struct.php

@@ -28,4 +28,14 @@ abstract class Struct
      * @var ByteBuffer $bb
      */
     protected $bb;
+
+    public function setByteBufferPos($pos)
+    {
+        $this->bb_pos = $pos;
+    }
+
+    public function setByteBuffer($bb)
+    {
+        $this->bb = $bb;
+    }
 }