[EXPAND] Remove unused enumeration.
[src/resource.rc] Update copyright (year) in VERSIONINFO.
[src/misc.h] Add function mc_rect_contains_rect().
[EXPAND] Support for animating resizing of the parent window.

 * Added style MC_EXS_ANIMATE.
 * Added style MC_EXS_IGNORECHILDREN.
 * Added flag MC_EXE_NOANIMATE (for MC_EXM_EXPAND and MC_EXM_TOGGLE).
 * Added notifications MC_EXN_EXPANDING and MX_EXN_EXPANDED.