gccrs: Prevent execution of some nr1.0 functions with nr2.0

gccrs: Prevent execution of some nr1.0 functions with nr2.0

gcc/rust/ChangeLog:

	* resolve/rust-name-resolver.cc: Include options.txt.
	(Resolver::insert_resolved_name): Assert that name resolution
	2.0 is disabled.
	(Resolver::lookup_resolved_name): Likewise.
	(Resolver::insert_resolved_type): Likewise.
	(Resolver::lookup_resolved_type): Likewise.
	(Resolver::insert_resolved_label): Likewise.
	(Resolver::lookup_resolved_label): Likewise.
	(Resolver::insert_resolved_macro): Likewise.
	(Resolver::lookup_resolved_macro): Likewise.
	(Resolver::insert_resolved_misc): Likewise.
	(Resolver::lookup_resolved_misc): Likewise.

Signed-off-by: Owen Avery <powerboat9.gamer@gmail.com>