* Use target_include_directories to specify include paths
* Specify project root (parent of rtgui and rtengine) as include path
* Replace relative includes with normal includes
Replaces the following deprecated Gtk classes throughout the codebase by their non-deprecated counterparts. Style, HBox, VBox, HPaned, VPaned, HScrollbar, VScrollbar, VSeparator, HSeparator, Stock, Table, VScale and HScale.
If you hit Ctrl+s to save the image, then delete the filename and press
the cancel button, the next time you tried to Ctrl+s the same image the
filename would show as a period, ".". This patch fixes that - now it
will show the original filename.
Fixes#3174
Currently, if you open the save as dialog, press ESC to close the dialog and then re-open it, the filename is cleared to `"."`.
This patch sets `SaveAsDlg::fname` so RT always gets the original filename back even if the dialog is dismissed.
