Cleanup superfluous.c a bit
The superfluous.[ch] files have a few minor issues, this patch addresses some of them:
- Move the defines to the top of the superfluous.c file
- Include the ifdef NORMAL_ICON_KABOOM inside the DoKaboom() function
because the DoKaboom is used without the NORMAL_ICON_KABOOM ifdef in
other files.
- Include the ifdef WINDOW_BIRTH_ZOOM inside the DoWindowBirth() function,
therefore the function don't needs to be defined twice (with and whitout
WINDOW_BIRTH_ZOOM define.
- Now the functions are defined in superfluous.h and the externs are not
needed.
- We need include the dock.h in the superflous.h because is used by the
definition of MakeGhostDock().
- We need include the superfluous.h in window.c (removing the extern)