LibreOffice 3.4.4 RC 1

# Fixed bugs
* base
- Perhaps it could be simplified
* bootstrap
- fix building of the 64-bit Windows Explorer extension
* calc
- fix recalculate matrix formula dimension correctly
- mark all formula cells dirty when appending a new sheet
- speed up range name lookup by index.
* components
- get testtool working
- move init that depends on parent to post-parent avail
- toggling grammar checkbox deletes sentence
* extensions
- libreoffice doesn't build with poppler-0.17.3
* impress
- don't crash while dropping texture
- fix hang in slideshow.
* libs-core
- backport collection of operator= fixes
- createProcessServiceFactory can't happen before sync
- dbGridControl::RemoveColumn even if no corresponding Model column
- fix fallout - recognize .svg in odf container
- fmXGridPeer::getByIndex: Error checking of pGrid->GetModelColumnPos(nId) call
- get testtool working
- load Dialog library before trying to get embedded images
* libs-extern
- reenable "use typedefs and endianess from sal" patch hunk
* libs-gui
- activation order crashes address database
- let Qt call XInitThreads(), so that it knows it's been called
* writer
- comment added
- crash on closing document with footnotes
- fix for avoid crash while processing incorrect range of pages
- fix leak in pdf export.
- hide 'math baseline alignment' unless available