A cleanup of the CMake file in this repo,
for consistency with similar effort in other Vulkan repos.
clarify setting Windows install prefix if needed
project() : NONE = this project has no language toolchain requirement.
update .cmake-format.py 0.4.1
reformat using cmake-format 0.4.1
Change-Id: Ic64b335676eb6b8bd8ffd1b0d8c5468a4239287c
Allows for this repo to be included as a submodule of another
repo that defines its own uninstall target. The uninstall target
is best defined at the top-level repo.
