Syntactic analysis progress

Though it's crashing when I add a constituent.
Pointer checking to prevent crash
Missed connection
GUIDs for Allomorphs

Also, moving definitions of static functions to the implementation where
they belong.
Fixed Allomorph GUID generation bug

I was tired when I was coding this...
FlexText serialization of Allomorph objects

The morphological analysis is now always included; verbose or
non-verbose; GUIDs are serialized.
GUIDs are now read for Allomorphs
Fixed FlexText reader bug

Need to handle <item>s differently depending whether we're in
<morphemes> or not.