merge xauth 1.1.3, and xdm 1.1.16.
merge xdm 1.1.12.
Use proper format string.
merge xdm 1.1.11
merge xdm 1.1.10
merge xdm 1.1.9.
get rid of a warning only visible when compiling with USE_PAM
initial import of xdm-1.1.6