fix swap across multiple screens

exchange_with_frame now always selects the second frame given,
simplifying the code (getting rid of segfaults when both were
on different screens). This changes the behaviour of cmd_swap
to always focus the first argument when two arguments are given.

This patch also removes the screen argument of exchange_with_frame,
which is now no longer needed (and cmd_swap was giving the wrong
screen anyway in the case of multiple arguments given).

0 files changed, 0 insertions, 0 deletions