Win32 functions.

for the list view.

selection has been cancelled, so the button is redrawn in the "up"
state.

skip calling them if timer signal occured while current thread was
holding the Win16Lock (to prevent 16-bit stack corruption).

- more depth conversion routines for X11 (15, 16 and 32 -> 8)

Hook cursor/icon destruction into FreeResource (like Win95).

Merged NE and PE resource handling.