Removed sal/config.h

Change-Id: I6214fe2f3e0e1fcb6cf29b73970326026c3f0ee6
Removed rtl/ref.hxx

Change-Id: I0d463177f5553836c3bea7bc49af0500369a7466
Removed com/sun/star/uno/Reference.hxx

Change-Id: I7810680909cb3138ee71294ab797fb9c195bb963
Merge ld:/home/gelma/dev/prg/for_riccardo/slot2 into for_riccardo
Merge ld:/home/gelma/dev/prg/for_riccardo/slot3 into for_riccardo
Removed rtl/ustring.hxx

Change-Id: I010702b0ebd134fb423d1eb75c958dbf088e5c57
Merge ld:/home/gelma/dev/prg/for_riccardo/slot4 into for_riccardo