Bugfix (ext/com_dotnet): Added VT_ARRAY, VT_BYREF, VT_PTR functionality

[DmitryMaksimov]

Now you can use:

new Variant([123, "32", 12.5], VT_ARRAY | VT_I4); //Here is we got safearray and VARIANT (type=VT_ARRAY | VT_I4)
$vtI4 = new Variant(123, VT_I4);
new Variant($vtI4, VT_BYREF);// => type = VT_BYREF | VT_I4;
new Variant($vtI4, VT_BYREF | VT_VARIANT);// => type = VT_BYREF | VT_VARIANT;
new Variant($vtI4, VT_PTR);// => type = VT_PTR and point to VARIANTTAG structure
new Variant($vtI4, VT_BYREF | VT_PTR);// => type = VT_PTR and point to variable of VARIANTTAG structure

[DmitryMaksimov]

Please, I need this modifications in your feuture versions.

[Girgias]

@DmitryMaksimov can you rebase on latest master?