Fix instance and singleton method locals for Ruby

Ruby singleton methods (`def x.y ... end`) weren't covered in the list
of locals. In addition, instance methods didn't support names that are
capitalised (`def Integer ... end`).

This commit ensures that both instance and singleton methods are
supported, and that both support identifiers and constants as their
names. This ensures that all following examples are covered:

    def foo; end
    def FOO; end
    def self.bar; end
    def self.BAR; end

0 files changed, 0 insertions, 0 deletions