CMake utility modules needed for building Vala Panel (and related projects)

 CMake modules which are used for Vala Panel development.
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 Included CMake modules:
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   - various Find<PACKAGE> modules (e.g. BAMF, GTK+, PEAS, WNCK, X11)
   - various GLib helpers
   - various modules for Git based versioning
   - FindVala and ValaPrecompile modules
   - and others