It's always the case, that the default temp folder is used. aName and
aRet are always empty, pParent is no longer used. So the pParent
argument makes no sense anymore.

bDirectory makes no sense without pParent and is apparently unused
(always sal_False by default).

The include of tools/tempfile.hxx in unotools/tempfile.cxx in not
necessary.

Conflicts:
	tools/source/fsys/tempfile.cxx

Change-Id: I9c53b263a640e53140a8ae8795181b1c5e43f26d