This time with sd/.../ui/unoidl

See np_sdk/Package_inc.mk .

There are unit tests that do not use URE, e.g., in cppuhelper.

This reverts commit 33e9f3d3.

Conflicts:

	sot/CppunitTest_sot_test_sot.mk
	svl/CppunitTest_svl_urihelper.mk

It does not actually _set_ the command line arguments, but rather _adds_
to them. IMHO the new name reflects this fact better.

Or is there any use case where we would need to use UNO API headers, but
not require the appropriate type database at runtime?

udkapi.rdb, resp. xml/services.rdb were not added to UNO_TYPES, resp.
UNO_SERVICES env. var. in all cases.

This reverts commit f52138de. It was the cause
of infinite recursive loops (huh, why, that was obvious!).