[PATCH] Allow printing of malformed tree-il

[No Itisnt]

I've noticed while renovating my parser that it's pretty common for
unwanted values to weasel their way into tree-il. This patch adds an
optional else clause to unparse-tree-il, so when it's told to be
permissive, it will allow non-tree-il values through without error, so
as not to cause errors while printing errors etc.

0001-Give-unparse-tree-il-an-optional-permissive-argument.patch
Description: Binary data