[all-commits] [llvm/llvm-project] f5fd8a: Try to fix WindowsManifest CMake logic on Windows

[Reid Kleckner via All-commits]

  Branch: refs/heads/release/10.x
  Home:   https://github.com/llvm/llvm-project
  Commit: f5fd8a37c18439102eb30c85dadac68c260a1a0d
      https://github.com/llvm/llvm-project/commit/f5fd8a37c18439102eb30c85dadac68c260a1a0d
  Author: Reid Kleckner <rnk at google.com>
  Date:   2020-03-02 (Mon, 02 Mar 2020)

  Changed paths:
    M llvm/lib/WindowsManifest/CMakeLists.txt

  Log Message:
  -----------
  Try to fix WindowsManifest CMake logic on Windows

CMake is complaining about the "^" regex if the prefixes are empty
strings.

(cherry picked from commit e441a584f3f7d743ab77031a47d9ad60ee56b53d)