Add new braille tables supported by liblouis 2.6.0.

third_party/liblouis/liblouis_list_tables.py

Index: third_party/liblouis/liblouis_list_tables.py
diff --git a/third_party/liblouis/liblouis_list_tables.py b/third_party/liblouis/liblouis_list_tables.py
index 79b0c10d5a8ec685bf52f2d1dc637d041142685a..e42e5daee21b3fc0224d8740049000371acf4542 100755
--- a/third_party/liblouis/liblouis_list_tables.py
+++ b/third_party/liblouis/liblouis_list_tables.py
@@ -25,7 +25,11 @@ def ToNativePath(pathname):
 
 def LoadTablesFile(filename):
   with open(ToNativePath(filename), 'r') as fh:
-    return json.load(fh)
+    try:
+      return json.load(fh)
+    except ValueError, e:
+      raise ValueError('Error parsing braille table file %s: %s' %
+                       (filename, e.message))
 
 
 def FindFile(filename, directories):