Add some defined? with expression specs
Fix some defined? specs for 1.8
Tag failing new defined? specs
Merge remote-tracking branch 'kachick/spec-defined-p_with_some_expressions'

Conflicts:
	spec/tags/20/ruby/language/defined_tags.txt
Removed CI tags for 1.8 mode.
Fixed compile command.
Fixed some defined? specs for super.
Removed CI tags for passing defined? specs.