Make the checkboxes added in the previous commit work.
tree62dc6c358de2360bf1651361dfe0494eba8a8009
-rw-r--r-- 3741 .gitignore
-rw-r--r-- 1453 .valgrind
drwxr-xr-x - ETL
drwxr-xr-x - autobuild
drwxr-xr-x - gtkmm-osx
drwxr-xr-x - synfig-core
drwxr-xr-x - synfig-docs
drwxr-xr-x - synfig-osx
drwxr-xr-x - synfig-studio