(EXTRA_DIST): Added 21.exp, 22.exp, 23.exp, 24.exp, 25.exp, 26.exp,

	27.exp, 28.exp, bug-145.exp, bug-225.exp, bug-349.exp,
	bug-37-2.exp, bug-37-3.exp, bug-37-4.exp, bug-37.exp,
	bug-38.exp, bug-598-2.exp, bug-598.exp, bug-612.exp and
	bug-84.exp.