Update LibreOffice to 3.4.5 for the following patches:
=== base ===
* fix dnd crash from default assignment operators ({{fdo|39950}}) [Caolán McNamara]
* reenable ADO URL helper UI ({{fdo|32347}}) [Lionel Elie Mamane]
=== bootstrap ===
* add .ppsx ({{fdo|39963}}) [Tor Lillqvist]
=== calc ===
* avoid using ulimit_cast between signed and unsigned. ({{fdo|39589}}) [Kohei Yoshida]
* boolean values are valid for matrix evaluation ({{fdo|40967}}) [Markus Mohrhard]
* correctly map external ranges into matrix instances. ({{fdo|40110}}) [Kohei Yoshida]
* display caption strings without format detection. ({{fdo|42169}}) [Kohei Yoshida]
* fixed Libreoffice calc crashes when re-opening a xlxs file ({{rhbz|754051}}) [Eike Rathke]
* prevent access to non existing mdds elements ({{fdo|41807}}) [Markus Mohrhard]
* set the logic straight for "center across selection" setting. ({{fdo|43308}}) [Kohei Yoshida]
=== components ===
* change logic of IsOfficeRunning custom action ({{fdo|36677}}) [Andras Timar]
* fix ({{bnc|653688}}) [Thorsten Behrens]
* fix handling of SAFEARRAY(s) returned as variant in olebridge ({{fdo|38441}}) [Noel Power]
=== filters ===
* fix : Auto fit text VIEWING too small in PPT ({{fdo|41245}}) [Arnaud Versini]
* fix crash while opening certain pptx files. ({{bnc|706792}}) [Muthu Subramanian]
=== libs-core ===
* - turn DocBasicItems into an rtl::Static to improve shutdown on mac ({{fdo|39520}}) [Michael Meeks]
* fix the drawing of dotted and dashed borders in Calc. ({{fdo|37129}}) [Tomofumi Yagi]
* pImplementationName is not a compile-time constant ({{fdo|36555}}) [Lionel Elie Mamane]
=== libs-gui ===
* fix crash at exit ( access of deleted GtkSalDisplay instance ) ({{bnc|728603}}) [Noel Power]
* fix horizontal scrollbars with KDE oxygen style ({{bnc|722918}}) [Luboš Luňák]
* fix the drawing of dotted and dashed borders in Calc. ({{fdo|37129}}) [Tomofumi Yagi]
* resolves tmp name reuse in mass pdf export ({{fdo|41295}}) [Caolán McNamara]
=== postprocess ===
* make the 3D transitions work again ({{bnc|728559}}) [Radek Doulik]
=== translations ===
* workaround, remove access key to prevent crash ({{fdo|30977}}) [Andras Timar]
=== writer ===
* backport of 3524727db0f3cfecf3a47046795c527808c10c3e ({{issue|58612}}) [Luboš Luňák]
* fix fallout - recognize .svg in odt container ({{fdo|41995}}) [Thorsten Behrens]
* nO_STYLE default for borderlines mso import, fixes image size issue ({{bnc|718971}}) [Noel Power]
* swDoc::ReplaceRangeImpl: ({{issue|102333}}) [Michael Stahl]
* swView::ExecSearch: ({{fdo|40831}}) [Michael Stahl]
currently building as prerelease in ppa:
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