button, which runs a file chooser to set the text entry.
Add ui_setup_open_button_callback() for setting up a button callback
that behaves like the open button in ui_path_box_new().
Use ui_path_box_new() in FIF dialog setup.


git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@1485 ea778897-0a13-0410-b9d1-a72fbfd435f5