Cosimo Lupo d89fcf93bc [varLib_test] add 'MVAR' to expected tables list
Note: the `expect_ttx` test is passing, but the `check_ttx_dump` which ensures the TTX dump is the same after saving and reloading the font, is currently failing, as the "ValueRecordSize" count is None

```
--- /Users/cosimolupo/Documents/Github/fonttools/Tests/varLib/data/test_results/Build.ttx
+++ /var/folders/7k/fl5q53lj51g0d8hxdkrx9_z80000gn/T/tmpoBCAua/tmp1.ttx
@@ -174,8 +174,7 @@
   <MVAR>
     <Version value="0x00010000"/>
     <Reserved value="0"/>
-    <ValueRecordSize value="8"/>
-    <!-- ValueRecordCount=2 -->
+    <ValueRecordSize value="None"/>
     <VarStore Format="1">
       <Format value="1"/>
       <VarRegionList>
```
2017-08-03 16:51:25 +01:00
..
2017-08-01 10:54:47 +09:00
2017-03-28 03:43:01 -07:00