cmake: consolidate docs generation, fix missing/broken parts #6905
+356
−282
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Major rework of documentation generation with CMake.
It does not address man file generation of indexed files. That is a bit tricky as the list of indexed files is not predictable.
It currently uses html files to generate the documentation.
With this update, comparing with
diff -qr < autotools_build>$GISBASE/docs/html <cmake_build>$GISBASE/docs/htmlresult in similar content.Initially posted as draft as it depends on (includes) #6878 and #6904.