Compile fixes

[Dominique Quatravaux]

Dear xemacs hackers,

the attached patch applies against the current Mercurial tip
(dd9030354e14). It solves the following compile problems:
  * trivial typo in src/console-gtk.c;
  * replace IMAGE_INSTANCE_GTK_MASK with IMAGE_INSTANCE_PIXMAP_MASK in
assignments in src/glyphs-gtk.c, because gcc 4.0 doesn't quite like
assigning to a cast lvalue. (This is the same issue as Ubuntu Hardy's
current 20_gcc_4.0.dpatch,
https://launchpad.net/ubuntu/hardy/+source/xemacs21/21.4.21-1ubuntu2).

Please apply.

Note that I use Mercurial too; if you prefer patches sent by "hg
email", please state your preferred options.

Cheers,

-- 
  Dominique Quatravaux
  +41 791 609 40 72