There are two fake classes in qendian.h that exist only documenting
a lot of operator functions, but now that clang is being used to parse
all C++ code, when a class is a template class, clangqdoc must see its
template stuff to recognize template type T, for example. Hence, this
update adds template<typename T> to some fake class declarations used
only for documentation purposes. ie, inside #ifdef Q_CLANG_QDOC.
Change-Id: I1988b77cd7f3bb97067e7107dd00de34770e9fed
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>