Beginnings of template debugging tests.

	Beginnings of template debugging tests.
	* gdb.c++/templ-info.cc:  New file to test for template
	debugging capability of the compiler.
	* gdb.c++/Makefile.in:  Add rule to build templ-info.exp from
	templ-info.cc.
	* gdb.c++/templates.cc:  Add explicit template instantiations
	to enable compiling with -fno-implicit-templates. Add destructor
	and 'value' method to T5 class for template tests.
	* gdb.c++/templates.exp:  Add testcases for printing of template
	types, setting breakpoints on template methods and calling a
	template method.