Update XMascot to 2.6a.

97/10/24 Ver 2.6 Release
* fixes contrib
* some trivial fixes

97/10/16 Ver 2.6 Pre
* start to release
* trivial fixes for doument
* minor fixes.

97/08/10 Ver 2.6alpha (COMIKET Version)
* Various fixes but vaguely remember
* improve imagelib drastically
* support gif and bmp
* temporary delete pnm/tif
* introduce PixCore
* remove various global variables.
* DUMMY_SETLOCALE
* cut off cursor pattern (resource addressable)
* move settings to config.tmpl
* remove transparent color related options
  (involve with changing standard data to GIF-lize. when absolutely necessary,
  specify resource with -xrm option)
* add option -drawtiming for skip drawing

* since COMIKET Version, with adjunct data. no redistributable.

(obache)