cpack: Set CPACK_TPLEVEL_TAG so that debug packages unpack to the same location as normal ones.

Author: rsomla1

PackageSpecs.cmake

@@ -110,6 +110,7 @@ ELSE(EXTRA_NAME_SUFFIX)
 ENDIF(EXTRA_NAME_SUFFIX)
 
 set(CPACK_PACKAGE_INSTALL_DIRECTORY "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-${CPACK_SYSTEM_NAME}")
+set(CPACK_TOPLEVEL_TAG              "${CPACK_PACKAGE_INSTALL_DIRECTORY}")
 set(CPACK_PACKAGE_FILE_NAME         "${CPACK_PACKAGE_INSTALL_DIRECTORY}")
 if(CMAKE_BUILD_TYPE STREQUAL Debug)
   set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY}-debug")