OpenSystemsDevelopment / qpdf

Remove parameters and return the description.

Set parsed offset at the same time as setting description.

Avoid dynamic casting.

Exclude uninitialized, destroyed and reserved objects.

Move test for m->linearized outside loop.

A new private overload of QPDF::makeIndirectObject breaks pikepdf's
build, so renaming function.

…ternal2 and copyObject2

copyObject2 repeats a second time what
new_obj = QPDFObjectHandle(obj->copy(true))
in shallowCopyInternal2 already did.

…ternal2 and copyObject2

Have separate versions for unsafeShallowCopy, shallowCopy and makeDirect.

Add optional parameter shallow. Change logic errors to runtime errors.