Merge topic 'PackageConfigHelper_UsrMove'

4cad848 configure_package_config_file(): extend documentation
37c4bc1 configure_package_config_file(): fix indentation
d477414 configure_package_config_file: force absolute paths for usr-move
Merge topic 'fix-automoc-compile-defs'

429e369 Process COMPILE_DEFINITIONS as generator expressions in QtAutomoc.
0e10782 Move GetCompileDefinitions to cmTarget.
Merge topic 'fix-relocatable-include-dirs'

34d1ade Add the INSTALL_PREFIX genex.
3a17197 Generate the _IMPORT_PREFIX in the non-config export file.
Merge topic 'DocumentRelativePathHandling'

a7d6ebb documentation: handling of relative paths by include- and link_directories()
Merge topic 'FindGTK2-lib-order'

399c3b8 FindGTK2: Fix GTK2_LIBRARIES order for static gtk libraries
Merge topic 'fix-TARGET_PROPERTY-extraction'

5daaa5c Fix TARGET_PROPERTY target extractions.
Merge branch 'master' into next