* rust-demangle.c (looks_like_rust): Remove.
	(rust_is_mangled): Don't check escapes.
	(is_prefixed_hash): Allow 0-9a-f permutations.
	(rust_demangle_sym): Don't bail on unknown escapes.
	* testsuite/rust-demangle-expected: Update 'main::$99$' test.

From-SVN: r276539