Had an embarrassing thinko in the assembler generation for the iOS
simulator, had forgotten the $ for a literal number. While at it, make
also the simulator read-only code snippet data structures
position-independent. Some minor comment improvements. Bridge seems to
work now on simulator.

Compiles, but I obviously have no idea how it works yet.

Yes, eventually we should factor out common parts from the iOS and
MacOSX code.

The dialog for the export to PDF was enhanced with a section for the
option of setting a watermark. The dialog has now a special subsection
for this with a box to insert a string for the watermark.

The VisibleBottom and ZoomType properties are just set as it seems
without that, SwView::ReadUserDataSequence() ignores the ZoomFactor as
well.

When removing a source file, the outdated class file would still end up
in the jar otherwise.

In the rare case that the soffice process outlives the Java side UNO
bridge, ensure that soffice.bin doesn't continue running.

Otherwise the class files for IDL files that were removed still end up
in unoil.jar and may cause JunitTest to fail with
"binaryurp::Unmarshal: type with unknown name: ".

Write dummy targets for included files, so the incremental build does not
break with "No rule to make target" if the included file is removed.