[lxqt-base/lxqt-lightdm-greeter]: added a patch to include Qt library directory for compile.
lxqt-base/lxqt-lightdm-greeter-9999: dropped src_prepare(), added PATCHES variable
Merge branch 'patch-2'

Conflicts:
	lxqt-base/lxqt-lightdm-greeter/lxqt-lightdm-greeter-9999.ebuild