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cmMakefile: Do not track CMake temporary files.

Since commit ad502502 (cmMakefile: Track configured files so we can
regenerate them, 2013-06-18) cmMakefile::ConfigureFile records the
configured file as an output file generated by CMake.  The intention is
that for make and ninja we can re-run CMake when one of the files it
generates goes missing.  However, files configured temporarily in
CMakeTmp directories by Check* modules do not live past the CMake
invocation.

We have to also track input files to the configure command.  In theory
the input to a configure command could it self be a file that is going
to be deleted later (output from a custom command or configure_file).
Merge topic 'no_track_configured_files' into next

38571f2 cmMakefile: Do not track CMake temporary files.
Merge branch 'master' into next
Merge topic 'no_track_configured_files'

38571f2 cmMakefile: Do not track CMake temporary files.
FindGTK2: Fail if freetype include directories are not found
Merge topic 'FindGTK2-targets' into next

7de465b FindGTK2: Fail if freetype include directories are not found
Use one authorative source of the LINK_LIBRARIES property.

We populate and maintain a vector of structs to keep track of
backtraces already, so no need to populate the Properties container
additionally.

For completeness, it is necessary to remove the condition for
populating the vector for only valid library names and generator
expressions. That condition is now determined when evaluating the
generator expressions.
Merge topic 'authorative-LINK_LIBRARIES' into next

f01dc72 Use one authorative source of the LINK_LIBRARIES property.