Release icewm-2.2.0

Support modifying all icewm preferences directly via a popup.
Allow to reset a key or string option in the preferences menu.
Show the preference description when modifying a preference.
Give each preference option a meaningful description.
Drop support for nonICCCMconfigureRequest winoption.
Immediately redraw clock after setting default clock format.
Add new clock format %H:%M to clock menu.
Fix cmake test target for issue #41.
Improve CMake build speed by building libraries.
If an application resizes itself partially outside the work area,
then move it back inside the work area, if possible, for issue #550.
Fix ignoreQuickSwitch winoption for focused windows for issue #552.
Support locales in icehelp and icewmhint.

shasum icewm-2.2.0.tar.lz 77ee4bf345ec38c8b04d5a616195f97e6d9bd802