This commit adds a .txt file next to each example test that generates a
text output. This text file contains the expected output and it is an
error if the actual output does not match the expected output. This
means that we no longer have to run the example tests before we can
expand all the @foo@ expressions that occur.
While touching this, I also fixed some typos and unexpected newlines in
the tests' output.
Signed-off-by: Uli Schlachter <psychon@znc.in>