#i123795# variable names should not confuse vcl Window and cocoa NSWindow types

VCL's Window type and Cocoa's NSWindow type are quite different.
Naming variables as if they were the same introduces gratuitous
complexity especially when debugging stacks where both types are used.
The names of NSView type variables have been adjusted too.
123729: More general cleanup in installer scripts.
123797: *.docx import: remove additional empty paragraph at imported footnote resp. endnote