DoublyLinkedList.cpp #4

# Change User Description Committed
#4 19042 Liz Lam Rename/move file(s) to proper main branch.
#3 10191 Matt Attaway Bring Workshop version of p4api.net up-to-date with the 14.2 release.
#2 8964 Bill fix line endings
#1 8873 Matt Attaway Initial add of the P4API.NET source code