add wkhtmltox so file
	new file:   common/lib/libX11.so.6
    new file:   common/lib/libXau.so.6
    new file:   common/lib/libXext.so.6
    new file:   common/lib/libXrender.so.1
    new file:   common/lib/libfontconfig.so.1
    new file:   common/lib/libxcb.so.1
Merge branch 'linux64' of https://github.com/buke/GreenOdoo-Runtime into 7.0-linux64