Comment 2 for bug 48513

Latest versions of xchat-gnome detect if libenchant is not installed and display a message:
"In order to get spell-checking, you need to have libenchant installed with at least one dictionary."

IMHO this message is not very intuitve for a basic user, so we can :
- Make libsexy depend on libenchant1c2a
- Patch xchat-gnome to explain that this package should be installed using synaptic.
- Patch xchat-gnome and use the futur https://wiki.ubuntu.com/DesktopTeam/CommonInstallHook to offer the possibility to the user to easily install this package