fiji-compat: remove WindowManager#setCurrentWindow(ImageWindow, boolean)

The setCurrentWindow(ImageWindow, boolean) method was present in
ImageJA, but that fix for superfluous recording of window activations
was never accepted into ImageJ 1.x. So the fix was undone in ImageJA's
6c5fa7c4(Back out change that suppressed superfluous recording).

It is time to get rid of it altogether.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Move fiji-compat's ij.macro.Function#call() patch to ij-legacy

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Move File>Import>Image Sequence patching to ij-legacy

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Port fiji-compat's ij.macro.Interpreter patch to ij-legacy

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>