Make is_gas_used work with SAMPLE_EVENT_GASCHANGE

SAMPLE_EVENT_GASCHANGE only contains o2 part, and not the he part so
when looking at ex the gaslist for dives/test20.xml it got it realy
wrong.

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Better clean.

Removing both $(HEADERS_NEEDING_MOC:.h=.moc) and qt-ui/*.moc was a
duplication, as all files refered in $(HEADERS_NEEDING_MOC) are located
in directory qt-ui/.

Generated header files qt-ui/ui_*.h were not removed.

Avoid forking `rm' multiple times and regroup file list in a more
intuitive order.

Signed-off-by: Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Distclean might clean the Documentation as well.

Signed-off-by: Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Removed target 'uicables', as it isn't used anywhere.

Signed-off-by: Cristian Ionescu-Idbohrn <cristian.ionescu-idbohrn@axis.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>