PR c++/19555
	* cp-tree.h (DECL_USE_TEMPLATE): Expand documentation.
	* decl.c (duplicate_decls): Do not discard
	DECL_IMPLICIT_INSTANTIATION when merging declarations.
	(start_decl): Do not SET_DECL_TEMPLATE_SPECIALIZATION for
	variables that do not have DECL_USE_TEMPLATE.

	PR c++/19555
	* g++.dg/template/static10.C: New test.

From-SVN: r94469