classdef constructor no longer works on default branch

[Mike Miller]

jwe,

Due to a very recent change, 3bb0a937c071, I am no longer able to invoke
a classdef class constructor defined in a @foo/foo.m function file. If
@foo/foo.m defines an old-style class, it works. If I get rid of the
@foo directory, it works.

I've bisected to this revision, and I would guess that it has to do with
the new checks in place that call is_class_constructor and
is_class_method? By the way, your commit comment doesn't describe the
changes to symtab.cc at all.

-- 
mike