Allows for custom LIBDIR to specified with cmake builds. WEECHAT_LIBDIR
is used for a custom Weechat directory, or set from LIBDIR (as LIBDIR
used to be set).
The following things have been renamed:
- file aspell.conf -> spell.conf
- options aspell.* -> spell.*
- bar item aspell_dict -> spell_dict
- bar item and local variable aspell_suggest -> spell_suggest
- info aspell_dict -> spell_dict