Defer test 26 until much later (to test 55).

Supporting embedded newlines in a macro invocation is going to be
tricky with our current approach to lexing and parsing. Since this
isn't really an important feature for us, we can defer this until more
important things are resolved.

With this test out of the way, tests 27 through 31 are passing.

diff --git a/tests/026-define-func-extra-newlines.c b/tests/055-define-func-extra-newlines.c
similarity index 100%
rename from tests/026-define-func-extra-newlines.c
rename to tests/055-define-func-extra-newlines.c