lxqt-panel : fix DEPEND variable (correct my mistake..)
lxqt-powermanagement : fix GIT_REPO_URI (correct my mistake..)
liblxqt, liblxqt-qt5 : follow upstream's updating (added cmake's option)
lxqt-lightdm-greeter : fix to support liblxqt's recent update.
liblxqt-qt5 : fix DEPEND variable (corrected my mistake..)