vfs:  Add get_file() primitive
Genie:  Uninline MacDirHandle constructor
Genie:  Make dir_stream_methods extern
Genie:  Overload DirHandle ctor for MacDirHandle
Genie:  Implement getfile method for MacDirHandle
vfs:  Use get_file() primitive
relix:  Use get_file() primitive
Genie:  Use get_file() primitive
vfs:  Define STRLEN() locally in filehandle.cc
vfs:  IOName() -> anon_name()
vfs:  Save a string copy in anon_name() return
vfs:  Try getfile method from get_file() primitive
Genie:  Implement getfile method for MacFile
Merge branches 'MacFile-get_file' and 'MacDirHandle-get_file' into get_file
Merge branch 'GetFile-cleanup' into get_file
vfs:  Move GetFile() logic to get_file() primitive
Merge branch 'get_file'
vfs:  Consult flags, not IsDirectory()
vfs:  Axe obsolete IsDirectory() member function