Touched up the darray constructors, fixed the resize darray member
functions, and added the operator[] to the dllist and darray. Got rid of
non standard variable size arrays.
 On branch master
 Changes to be committed:
	modified:   darray.hpp
	modified:   darray_definitions.hpp
	modified:   darray_utest.cpp
	modified:   deque_utest.cpp
	modified:   dllist.hpp
	modified:   dllist_definitions.hpp