[CMake] Support for multiple components in cpack

[Eric Noulard]

Hi All,

I did add a patch for the "multiple file problem"
http://public.kitware.com/Bug/view.php?id=10736

May be interested people can have a try and comment
this patch.

It adds the possibility  for any CPack generators to generate multiple file.
It adds "preliminary" support for component to all "Archive Generators"
(ZIP, TGZ, STGZ etc...) as an example of use.

The change is "backward compatible" in the sense that if
all CPack generators (but the archive one) behaves as before
with either componentized  project or not.

Waiting for feedback before going on

-- 
Erk
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