sxmo_wm.sh uses the `SXMO_WORKSPACE_WRAPPING` variable to control
relative movements. for example, set this to "5" and then the "Next
Workspace" option in the switch menu will cycle WS 1 -> 2 ... -> 5 -> 1.
same for one- and two-finger left/right swipe to switch/move workspaces.
however, absolute movements (via the move menu) only allowed moving to
WS 1-4. a user with non-default `SXMO_WORKSPACE_WRAPPING` could move a
window from WS 5 to WS 4 with this menu, but not from WS 4 back to WS 5.
this patch brings consistency by using `SXMO_WORKSPACE_WRAPPING`
anywhere we would otherwise assume the number of possible workspaces.
Colin
bf00570117