Set default %printer for NODE nterms

Before:

```
Reducing stack by rule 639 (line 5062):
   $1 = token "integer literal" (1.0-1.1: 1)
-> $$ = nterm simple_numeric (1.0-1.1: )
```

After:

```
Reducing stack by rule 641 (line 5078):
   $1 = token "integer literal" (1.0-1.1: 1)
-> $$ = nterm simple_numeric (1.0-1.1: NODE_LIT)
```

`"<*>"` is supported by Bison 2.3b (2008-05-27) or later.
https://git.savannah.gnu.org/cgit/bison.git/commit/?id=12e3584054c16ab255672c07af0ffc7bb220e8bc

Therefore developers need to install Bison 2.3b+ to build ruby from
source codes if their Bison is older.

Minimum version requirement for Bison is changed to 3.0.

See: https://bugs.ruby-lang.org/issues/19068 [Feature #19068]

1 files changed, 1 insertions, 1 deletions

diff --git a/ext/ripper/tools/preproc.rb b/ext/ripper/tools/preproc.rb
index b838a78db7..cd85a5da61 100644
--- a/ext/ripper/tools/preproc.rb
+++ b/ext/ripper/tools/preproc.rb
@@ -47,7 +47,7 @@ def prelude(f, out)
     when /\A%%/
       out << "%%\n"
       return
-    when /\A%token/
+    when /\A%token/, /\A} <node>/
       out << line.sub(/<\w+>/, '<val>')
     when /\A%type/
       out << line.sub(/<\w+>/, '<val>')