; Make some ERC test fixtures a bit more courteous

; Make some ERC test fixtures a bit more courteous

* test/lisp/erc/erc-dcc-tests.el (erc-dcc-tests--pcomplete-common):
Only emit messages when interactive.
* test/lisp/erc/resources/erc-d/erc-d-tests.el
(erc-d-tests-with-server): Shadow `erc-after-connect' so
`erc-autojoin-channels' doesn't affect other tests.
test/lisp/erc/resources/erc-scenarios-common.el
(erc-scenarios-common--make-bindings): Shadow `erc-after-connect' here
as well.  Also require erc instead of erc-backend to silence some new
compiler warnings the cropped up after the creation of erc-common.el.