Add clang-query tool to installation targets

[foutrelis]

Summary

It has been requested in a bug report downstream in Arch Linux to include the clang-query tool as part of our clang-tools-extra package. [1]

This point has also been brought up on the cfe-dev list and the LLVM bug tracker. [2] [3]

This diff is an attempt at upstreaming this change. Note that it only deals with clang-query since I'm not sure what other tools would be useful to install.

[1] https://bugs.archlinux.org/task/46392#comment139256
[2] http://lists.llvm.org/pipermail/cfe-dev/2015-June/043318.html
[3] https://llvm.org/bugs/show_bug.cgi?id=24046

[foutrelis]

Just a note that this change is specific to CMake since autotools already installs clang-query (along with some other tools).

[klimek]

LG

As we already a) install it from auto-tools and b) this tool is useful for non-llvm/clang devs

[foutrelis]

Thanks for the review.

Can you please commit the patch to clang-tools-extra/trunk (since I don't have commit rights)?

[klimek]

Submitted in r248710

clang-query/tool/CMakeLists.txt

   clangQuery
   clangTooling
   )
+
+install(TARGETS clang-query RUNTIME DESTINATION bin)