+ Attach lineno to tIDENTIFIER values (strings, ugh)
+ Adjust lineno when we lex a bunch of blank lines.
+ Extend RubyParserStuff#gettable to set the lineno if it comes in with the id.
+ Added String#lineno and #lineno= because I'm a bad bad person.
[git-p4: depot-paths = "//src/ruby_parser/dev/": change = 9166]