I missed a c++-03 requirement about friends. Fixed thusly.
Also fixed the recent debug9 failure for stabs debugging. That test
appears to be a dwarf test, but as there's no dg-requires-dwarf the
simplest fix was turning off block partitioning optimization (enabled on
x86 automatically at O2
This patch fixes pr 81899. It was an underlying bug exposed by my
removal of LANG_TYPE_SPECIFIC from BOUND_TEMPLATE_TEMPLATE_PARM.
B_T_T_P happened to not set CLASSTYPE_USE_TEMPLATE, even though, by
definition, they are template instantiations. However they also
happened to not be DECL_HIDDE
