cmake: support `make` and `make install`

- `make` or `ninja` will not build but not install
- `make install` or `ninja install` will build __and__ install

Only for build system generator Visual Studio, specify the following
to disable installation of lib files:

    ZIG_SKIP_INSTALL_LIB_FILES=ON
cd062b08d0Michael Dusan committed on 1/16/2020, 11:56:13 PMparentbac2773
1 file changedLine totals unavailable