ScImportExport clean-up, German comments

Change-Id: Ife16a0e787a03c1225218356572c2fd929a0c63c
Cleanup valueset.cxx

Change-Id: Ib0a27d8d3a3e974f73e7873ad8baae4721f6fb87
svtools: valueset.cxx - use scoped_ptr and clean-up

Change-Id: I91528f55af39faccfe1bf95999ac29669ead0aad
fdo#77088 WMF - replace 32-bit min/max assumption with const

Added RECT_MIN and RECT_MAX which represent the minimum and
maximum value a Rectangle object can hold. In WMF we used a 32-bit
assumption what the min and max value could be (0x7fffffff,
0x80000000) which causes problems on 64-bit systems.

Change-Id: Ic62daebbc2708cdeb7b0cf7b694bd9940eb98313