cmGlobalGenerator: Rename the FinalizeCompileDefinitions method.

This will soon also finalize include directories.
cmTarget: Don't finalize include directories in GetIncludeDirectories.

Rely on that having been done by the cmGlobalGenerator.
Make accessors for compile-related information const.

These can be moved to cmGeneratorTarget in CMake 4.0.
Revert topic target_compile_features.
Merge topic 'target_compile_features' into next

a304a2e Revert topic target_compile_features.
Merge topic 'constify' into next

9b28c38 Make accessors for compile-related information const.
19a8a3c cmTarget: Don't finalize include directories in GetIncludeDirectories.
3305364 cmGlobalGenerator: Rename the FinalizeCompileDefinitions method.