Only include top level includes from GTK+, GLib and GDK-PixBuf
update --url help string
gtk_show_uri() requires GTK+ 2.14
Set up CFLAGS on Unix too
Apply to fe-text too
Merge pull request #496 from bviktor/toplevel-includes

Only include top level includes from GTK+, GLib and GDK-PixBuf Closes #486
Add new window keybinding
Remove hardcoded clear keybinding

You can re-add this easily in settings > keyboard shortcuts
Move Perl from hexchat to gtk-win32
Add missing declaration
Enable cast checks