[PATCH] CMake: enable installing utils

[Chris Bieneman]

================
Comment at: cmake/modules/AddLLVM.cmake:551
@@ +550,3 @@
+  if( LLVM_INSTALL_UTILS )
+    install (TARGETS ${name} RUNTIME DESTINATION bin)
+  endif()
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I would add COMPONENT arguments here to set the install component, and I would add custom install targets.

For an example see: AddLLVM.cmake:416-424.

http://reviews.llvm.org/D8587

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