* include/sexpr.H: Move from utils.
	(UniqueAllocator): Remove.
	(SyntaxComparator): Likewise.
	* syntax/sexpr.cc: Move from utils.



git-svn-id: svn://svn.code.sf.net/p/open-axiom/code/trunk@3037 f499efd5-9937-0410-b36a-d3739c31ded8