Fix file path and line number errors when using +, * and ()

This PR fix file path and line number errors when using `+`, `*` or `()`.
I discovered this when using the above new grammar in Lrama.
Refs: ruby/lrama@df39a6f
Refs: https:/ruby/lrama/blob/df39a6f36535ac65e08a0a49eb84d6b944622e22/lib/lrama/parser.rb#L1270-L1282

As it stands, the second argument to `module_eval` is the absolute path to racc/grammarfileparser.rb and the line number. Perhaps specifying `@filename` and` @scanner.lineno + 1` is correct?

https:/ydah/racc/blob/ea43e57012355c726b914c52fdcb32708d1091c6/lib/racc/grammarfileparser.rb#L373

lib/racc/grammarfileparser.rb

@@ -295,7 +295,7 @@ def _add_many_rule(prev)
  return target if target
  target = _gen_target_name("many", prev)
  @many_rule_registry[prev.to_s] = target
- src = SourceText.new("result = val[1] ? val[1].unshift(val[0]) : val", __FILE__, __LINE__)
+ src = SourceText.new("result = val[1] ? val[1].unshift(val[0]) : val", @filename, @scanner.lineno + 1)
  act = UserAction.source_text(src)
  @grammar.add Rule.new(target, [], act)
  @grammar.add Rule.new(target, [prev, target], act)
@@ -308,7 +308,7 @@ def _add_many1_rule(prev)
  return target if target
  target = _gen_target_name("many1", prev)
  @many1_rule_registry[prev.to_s] = target
- src = SourceText.new("result = val[1] ? val[1].unshift(val[0]) : val", __FILE__, __LINE__)
+ src = SourceText.new("result = val[1] ? val[1].unshift(val[0]) : val", @filename, @scanner.lineno + 1)
  act = UserAction.source_text(src)
  @grammar.add Rule.new(target, [prev], act)
  @grammar.add Rule.new(target, [prev, target], act)
@@ -323,7 +323,7 @@ def _add_group_rule(enum)
  unless target = @group_rule_registry[target_name]
  target = @grammar.intern("-group@#{target_name}", true)
  @group_rule_registry[target_name] = target
- src = SourceText.new("result = val", __FILE__, __LINE__)
+ src = SourceText.new("result = val", @filename, @scanner.lineno + 1)
  act = UserAction.source_text(src)
  rules.each do |syms, sprec|
  rule = Rule.new(target, syms, act)