Log Message:
Import wip/icewm14 as wm/icewm14.

This is release 1.4.2 of the IceWM carry-on fork. The primary changes for
this release are a large number of bug fixes, memory leak fixes, code
quality improvements, various minor new features and a few portability
fixes.

Six old themes have been replaced with three new themes (CrystalBlue,
Helix, NanoBlue).

pkgsrc change: build now uses CMake.