gettext: avoid runtime dependency on xz
gettext: update 0.19.3_1 bottle.
Revert "gst-plugins-*: add dependency on xz for head build"

This reverts commit 9315d875182b048b4c5899a6048680a17e7fb89a.
Revert "gstreamer: add dependency on xz for head build"

This reverts commit 29a01cf3c1429aa843d0e1109836add71447eed4.
minidlna: remove HEAD dependency on xz

Unnecessary after 46a9cd6b6a8fd662a86f7dd5d783f1ab991e376a
wget: remove HEAD dependency on xz

Unnecessary after 46a9cd6b6a8fd662a86f7dd5d783f1ab991e376a
wget: fix HEAD build