CPack/RPM CPACK_RPM_USER_FILELIST change release note

Help/release/dev/cpack-rpm-user-file-list-with-multiple-directives.rst

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+cpack-rpm-user-file-list-with-multiple-directives
+-------------------------------------------------
+
+* The :module:`CPackRPM` module learned to support
+  multiple directives per file when using
+  :variable:`CPACK_RPM_USER_FILELIST` variable.