CPack fix #12366 components RPM packages have the same package name

fix based on the patch provided by winfriedd

Modules/CPackRPM.cmake

@@ -569,7 +569,7 @@ IF(CPACK_RPM_GENERATE_USER_BINARY_SPECFILE_TEMPLATE OR NOT CPACK_RPM_USER_BINARY
       "# -*- rpm-spec -*-
 BuildRoot:      \@CPACK_RPM_DIRECTORY\@/\@CPACK_PACKAGE_FILE_NAME\@\@CPACK_RPM_PACKAGE_COMPONENT_PART_PATH\@
 Summary:        \@CPACK_RPM_PACKAGE_SUMMARY\@
-Name:           \@CPACK_RPM_PACKAGE_NAME\@
+Name:           \@CPACK_RPM_PACKAGE_NAME\@\@CPACK_RPM_PACKAGE_COMPONENT_PART_NAME\@
 Version:        \@CPACK_RPM_PACKAGE_VERSION\@
 Release:        \@CPACK_RPM_PACKAGE_RELEASE\@
 License:        \@CPACK_RPM_PACKAGE_LICENSE\@