* dbxout.c (dbxout_global_decl): New.
	(xcoff_debug_hooks, dbx_debug_hooks): Use it.
	* sdbout.c (sdbout_finish): New.
	(sdbout_debug_hooks): Use it, add comments.
	(sdbout_global_decl): Defer initialised public vars to
	sdbout_finish.
	* varasm.c (assemble_variable): Don't output debug information
	for file-scope variables.

Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r44243