upversion/dnsmasq: Added version 2.71.

Slackware SlackBuild unchanged. Patches still apply (in both senses ;-)
SBo/lyx: Copied from SBo.
Reorganise directories.

Fold all hintfiles into SlackBuild dirs.
Abolish XFCE subdirectories.
Move XFCE deps and extras to upd-slack and upd-SBo.
upd/SBo/lyx: Updated for version 2.1.0.
upd-SBo/reaver: Copied from SBo.
upd-SBo/reaver: Updated for version 1.4.
xfce/libunique: Moved back from upd-SBo.

It's unchanged from SBo, so we'll leave it in xfce/ until slackrepo
can handle cross-repo deps.
upd-SBo/owncloud-client: Copied from SBo.
upd-SBo/owncloud-client: Updated for version 1.6.1.
upd-SBo/qtkeychain: Copied from SBo.
upd-SBo/qtkeychain: Updated for version 0.3.0.
upd-SBo/gpsbabel: Copied from SBo.
upd-SBo/gpsbabel: Updated for version 1.5.1.
upd-slack/libwnck: Fixed download URL.
upd-slack/git: Copied from Slackware d/
upd-slack/git: Updated for version 2.0.1.
README: Updated.

xfce/README: Removed.