fix build issue on linux
fix build issue for qt5
Merge branch 'daily_nobuild' into qt5
add mac native toolbar code
add two items to toolbar
fix search field on mac
fallback.... qt5 is disaster
qt 5 splitter cursor
auto mark message read
search, mactoolbar
qt5
sync message read status
fix scroll issue
more scrollbar fix
merge branch daily_nobuild
scroll for mac
mac userinfo
mac toolbar icon size
nothing fix, remove some useless code
mac toolbar