[CMake] Export utility targets to the build/install tree depending on LLVM_BUILD/INSTALL_UTILS

Allow external projects to import test-related targets like FileCheck, count, not etc. and query binary paths, properties, etc.
This would be useful for LLDB, because it reduces the difference between in-tree vs. standalone builds and simplifies CMake logic.

Reviewers: chapuni, gottesmm, beanz

Reviewed By: beanz

Subscribers: mgorny, lldb-commits, llvm-commits, #lldb

Differential Revision: https://reviews.llvm.org/D56606

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@350959 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed