CMake Nightly Date Stamp
IPO: involve the linker to more reliably check for gcc LTO support
Merge topic 'gcc-ipo' into next

6c755f0b IPO: involve the linker to more reliably check for gcc LTO support
Merge topic 'fix-Qt-autogen'

8f8edeb0 QtAutogen: Only add source files to the target if AUTORCC is ON.
Merge topic 'Qt4-WIN32-doc'

0f5dfd10 Help: Specify that qtmain.lib is only used for WIN32 executables.
Merge topic 'FindOpenSSL-root-dir'

12d6eb63 FindOpenSSL: Honor OPENSSL_ROOT_DIR everywhere (#14735)
Merge branch 'master' into next
Tests: Speed up RunCMake.CheckModules test

Enable the C and CXX languages only in the test cases that really need
them.  In the failure cases we do not get far enough to really use the
languages, so skip enabling them.
Merge topic 'test-CheckModules-speedup' into next

78be3247 Tests: Speed up RunCMake.CheckModules test
Move style section.
Fix hyperlink anchor names and text.
Merge topic 'update-buildsystem-docs' into next

257ee81b Fix hyperlink anchor names and text.
cc2b13a6 Move style section.
Help: Add a style guide.
Help: Mark up references to NEW and OLD policy settings properly.
Help: Use ``inline-literals`` to mark generator expressions.
Fix link.
Merge topic 'update-buildsystem-docs' into next

d8fb023d Fix link.
Help: Add hyperlink targets to some manual sections.

These can be refered to from the command documentation and other
relevant locations.
Help: Specify how to order and modify transitively set property values.
Help: Note that the compatible interface properties must not intersect.