fdo#75526: sdk: install URE library symlinks / import libs again

This is a bit involved because since the LinkTarget now creates the
instdir/sdk/lib/* files itself a Package cannot be used; so convert the
URE libraries to AutoInstall and add special handling for them to
gb_Helper_register_libraries_for_install to create the necessary links
in the "sdk" install-module.

(regression from 70c35265f517ef372cb739d4cc64499abf57a838)

Change-Id: Ia5467f3303d59f7f5f4a88adc22ceffb82a21ff1
Remove visual noise from ucb

Conflicts:
	ucb/source/ucp/webdav/webdavdatasupplier.cxx
	ucb/source/ucp/webdav/webdavresponseparser.cxx

Change-Id: I96b69f4867bbaaf42c3d5fd159cbb3e4fe80a4db
Reviewed-on: https://gerrit.libreoffice.org/8329
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>