195e574be5174815a51cf5c42f06f76a87a'>Introduce o3tl::optional as an alias for std::optional

Age	Commit message (Expand)	Author
2019-05-13	fix wrong SET/QUERY flags passed to uno::Reference	Noel Grandin
2017-10-23	loplugin:includeform: test	Stephan Bergmann
2017-05-12	remove unused uno::Reference vars	Noel Grandin
Stephan Bergmann
2019-10-04	add gbuild function for a common PCH and use it in sc/ and sax/	Luboš Luňák
2019-10-04	support reusing PCH if linktarget has additional reasonable defines	Luboš Luňák
2019-10-04	add "system" PCH that contains often used system headers such as STL	Luboš Luňák