[CMake] [ANNOUNCE] CMake 3.9.1 available for download

[Robert Maynard]

We are pleased to announce that CMake 3.9.1 is now available for download.

Please use the latest release from our download page:
  https://cmake.org/download/

* The "find_" command "PACKAGE_ROOT" search path group added by
  CMake 3.9.0 has been removed for the 3.9 series due to regressions
  caused by new use of "<PackageName>_ROOT" variables.  The behavior
  may be re-introduced in the future in a more-compatible way.

Thanks for your support!

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Changes in 3.9.1 since 3.9.0:

Björn Esser (2):
      Utilities/Sphinx: Restore compatibility with Sphinx pre-1.2
      Help: Silence warning about document not included in toctree

Brad King (8):
      UseSWIG: Fix when Java is enabled as a language
      VS: Fix VCTargetsPath detection
      Android: Fix support for CMAKE_SYSROOT without CMAKE_SYSROOT_COMPILE
      expat: Update script to get Expat 2.2.3
      expat: Update CMake build for 2.2.3
      Tests: Simplify RunCMake.find_package PackageRoot case regexes
      find_*: Disable the PACKAGE_ROOT search path group for CMake 3.9
      CMake 3.9.1

Chuck Atkins (3):
      find_package: Add missing PACKAGE_ROOT_PATH search path implementation.
      find_package: Fix PACKAGE_ROOT test to check find_pacakge(CONFIG) mode.
      find_package: Split PACKAGE_ROOT tests to work with smaller regex

Craig Scott (1):
      FindJava: Allow early access version trailing string to be mixed case

Cristian Adam (1):
      FindBoost: pop policy stack before returning

Expat Upstream (1):
      expat 2017-08-02 (97c6bd01)

Laurent Rineau (1):
      server: Fix crash on missing cache entries

Rechi Rechi (1):
      FindJava: fix hint for windows jre 1.6

Ruslan Baratov (1):
      Help: Fix module and function names in CMP0069 examples

Sebastian Holtermann (1):
      Autogen: Always create AUTOMOC/AUTOUIC include directory