also make unknown rule -1 to better separate it
Before, an unknown rule actually went to 0 == OSQLParser::select_statement

The old code would incorrectly move anchors from one sheet to another
when updating the anchors of an object that was not on current sheet.

That can happen e.g. when modifying a cell value which triggers a
(cell-anchored) chart object on another sheet to get updated.

Interestingly, this issue ended up causing a write error during file
save in some situations, and in others silenting removing the affected
chart objects on save.

See spec v1.9.1, page 198.

It turns out that the SwDoc member of SwRenderData was not actually
leaked, but was deleted via the ViewShell member.

apparently SwXTextDocument::getRenderCount() may be called more than once,
so make SwRenderData::CreatePostItData() stop complanining and leaking
memory.

Currently when printing via SwXTextDocument::getRendererCount()
two STL containers in class SwRenderData are filled with bare pointers
to page frames from the layout.
These pointers are then used by SwXTextDocument::render(), which takes
one page out of the map and prints it via this non-ref-counted pointer.

This bizarre design will not be tolerated; instead, when printing a page,
iterate over SwRootFrm::GetLower() until the requested page is found.
This is slower, i.e. O(n^2), but at least it does not crash.

And elaborate slightly.

Fix for fdo#35190 - Impress writes invalid ODF for the table
styles (text:style-name instead of table:style-name).