Add upstream patch to fix CMake detection.

At least since 2.8.12 `cmake --help' stopped outputting its version number,
which was being used by Qt Creator in its CMake detection process.

PR:		193283


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@367310 35697150-7ecd-e111-bb59-0022644237b5
- Install CMake's Help/ directory. Its contents are used by commands such as
  `cmake --help-command' and `cmake --help-policies', which were just
  erroring out or not printing anything.
  Modules/ and Templates/ are still installed by devel/cmake-modules.

  Reported by gahr@.

- Pass --parallel to CMake's bootstrap script to parallelize the initial
  part of its build process.


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@367311 35697150-7ecd-e111-bb59-0022644237b5