qt4-embedded-gles: Add recipe from meta-arago

The qt4-embedded-gles recipe provides an SGX accelerated version of
QT Embedded. Rather than adding all of meta-arago, we just pull in
this recipe.

Note: this is work-in-progress.

Signed-off-by: Ash Charles <ashcharles@gmail.com>
gumstix-image-xbmc: Add an image supporting XBMC

Signed-off-by: Ash Charles <ashcharles@gmail.com>