misc.hh, some small useful things, like ABS, MAX, etc
dlist : double linked list container
Stack : stack container based on double linked list
(did not use stl to make Dune self-contained)

[[Imported from SVN: r10]]

[[Imported from SVN: r9]]

[[Imported from SVN: r8]]

[[Imported from SVN: r7]]

[[Imported from SVN: r6]]

[[Imported from SVN: r5]]

[[Imported from SVN: r4]]

[[Imported from SVN: r3]]

[[Imported from SVN: r2]]

[[Imported from SVN: r1]]