This ensures the data is actually transmitted. Calling close causes the
connection to get reset, often before the data has been transmitted at all.
Http now works way better.
* server/CommClient.cpp, server/CommClient.h,
server/CommHttpClient.cpp, server/CommHttpClient.h:
Convert two stream classes to use the stream base class.
* server/HttpCache.cpp, server/HttpCache.h: A caching file to handle
http data requests.
* server/CommHttpClient.cpp, server/CommHttpClient.h: Move most of
the functionality into HttpCache.
* server/CommHttpListener.cpp, server/CommHttpListener.h: New
class to listen for http connections.
* server/CommHttpClient.cpp, server/CommHttpClient.h: New class to
handle http requests.
* server/server.cpp: Hack in a http listen socket on 6780.
