source files with missing license\copyright headers

[Gabe Martin]

Greetings,

I noticed the following files do not contain copyright notices.  What
happens in the case of files without explicit copyright notices?  Is
it assumed that they fall under the MIT/X license and if so is this
documented anywhere?

Xc\programs\Xserver\Xext\appgroup.h
Xc\programs\Xserver\xkb\ddxPrivate.c
Xc\programs\Xserver\xkb\xkb.h
Xc\lib\font\Speedo\bics-unicode.h
Xc\lib\X11\imKStoUCS.c
Xc\lib\X11\ImUtil.h
Xc\lib\Xext\ImUtil.h
Xc\programs\Xserver\dix\initatoms.c
Xc\programs\Xserver\mi\micmap.h
Xc\programs\Xserver\mi\mioverlay.c
Xc\programs\Xserver\mi\mioverlay.h
Xc\lib\Xaw\OS.c

Thanks,

Gabe Martin