[PATCH] add checks to hal-system-video-*-linux

[Danny Kukawka]

Hi,

this patch adds checks to hal-system-video-*-linux:

* check if vbetool is available and executable
* check before restore state/mode if /var/run/vbestate and
  /var/run/vbemode are available

Please review.

Danny

 ChangeLog                                  |    8 +++++
 tools/linux/hal-system-video-resume-linux  |   28 +++++++++++++++++--
 tools/linux/hal-system-video-suspend-linux |   12 ++++++++
 3 files changed, 46 insertions(+), 2 deletions(-)
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