LibreOffice 3.5.0 RC 1

# Core
* 256x256 Windows icons
* add 256x256 desktop and MIME type icons
* contination of 8a17792f2e5 (Handle/invalid column ID cleanup)
* copy pivot tables when a sheet is copied.
* defer formula token conversion for defined names (xls import).
* do the same for BIFF5 and earlier.
* drop attributes FRAME and RULES of for HTML 3.2
* finally, remove data cache when nobody references it.
* fix UpdateCheck clog up server by keeping connection alive
* fix prefix of command line switches (-- instead of -)
* fix rotation of shapes in imported MS documents
* fix unfortunate name alias mixups with DejaVu fonts
* fixed crasher in dialog destructor
* have cache instance keep track of who is referencing it.
* implement RTF import progressbar
* improve RTF import of table cell spacings
* no need to update the source range when it's a named range.
* now, refreshing a table should refresh all linked tables.
* partial revert of "...template names appear... correct word order"
* properly update range keys for pivot cache.
* sheet 0 is selected by default.
* text rotation fixes.
* the "Open..." button's more room problem solved
* vcl: isolate new attempt to count monitors as screens to gtk3
* vcl: second part of fix for - get xrandr / y positioning right
* why not showing horizontal scrollbar when needed?