* write a String_hash template


	* Array::slice() upper too

	* write a Pointer_hash template

	* fix/junk ambiguous String constructor overloads, e.g.:
	  String( int ) and String( char )

	* version numbering for shared lib.

	* LGPL?

	* disable this auto conv: const pointer -> bool -> string

	* Pointer_array

	* PCursor -> Pointer_cursor / PointerCursor ?

	* efficient copy cons for List

	* extend Interval

	* use template handle in handle.hh for strings?

	* move towards gnu or STL?

		parsestream.h
		vector.h

	* lgetopt: cmd -, or cmd --