Add suport to Meson

When comparing meson and autotools installed files as instructed here, there is a diff them, but I think meson is correct and I'm not willing to fix autotools:

-./usr/lib/x86_64-pc-linux-gnu
-./usr/lib/x86_64-pc-linux-gnu/xfce4
-./usr/lib/x86_64-pc-linux-gnu/xfce4/panel
-./usr/lib/x86_64-pc-linux-gnu/xfce4/panel/plugins
-./usr/lib/x86_64-pc-linux-gnu/xfce4/panel/plugins/libxfce4dict.so
+./usr/lib/xfce4
+./usr/lib/xfce4/panel
+./usr/lib/xfce4/panel/plugins
+./usr/lib/xfce4/panel/plugins/libxfce4dict.so

lib/meson.build

@@ -32,7 +32,7 @@ libdict_sources += gnome.compile_resources(
 )
 
 libdict = static_library(
-  'libdict',
+  'dict',
   libdict_sources,
   sources: xfce_revision_h,
   include_directories: [