Add experimental dependency builder for SWIG
Add experimental dependency builder for SWIG

This comes from a patch proposed for UseSWIG. However, some problems
seam to exist according to the bug report
(http://public.kitware.com/Bug/view.php?id=4147). We will need to see if
it works or not for us.

haka-security/haka,lcheylus/haka,haka-security/haka,lcheylus/haka,nabilbendafi/haka,Wingless-Archangel/haka,nabilbendafi/haka,haka-security/haka,Wingless-Archangel/haka,nabilbendafi/haka,LubyRuffy/haka,lcheylus/haka,LubyRuffy/haka