merge twm 1.0.13.1.

merge mkfontscale 1.2.2, twm 1.0.12, xauth 1.1.2, and xdm 1.1.13.

constify to fix build (with minimal changes)

initial import of twm-1.0.8

initial import of twm-1.0.7

initial import of twm-1.0.5

initial import of twm-1.0.4