package: avoid use of GLUONDIR variable

package/gluon-alfred/Makefile

package/gluon-authorized-keys/Makefile

package/gluon-autoupdater/Makefile

package/gluon-client-bridge/Makefile

package/gluon-config-mode-autoupdater/Makefile

package/gluon-config-mode-contact-info/Makefile

package/gluon-config-mode-core/Makefile

package/gluon-config-mode-geo-location/Makefile

package/gluon-config-mode-hostname/Makefile

package/gluon-config-mode-mesh-vpn/Makefile

package/gluon-core/Makefile

package/gluon-legacy/Makefile

package/gluon-luci-admin/Makefile

package/gluon-luci-autoupdater/Makefile

package/gluon-luci-mesh-vpn-fastd/Makefile

package/gluon-luci-node-role/Makefile

package/gluon-luci-portconfig/Makefile

package/gluon-luci-private-wifi/Makefile

package/gluon-luci-theme/Makefile

package/gluon-luci-wifi-config/Makefile