replacing win32_cow implementation with win32_qfork. replication currently broken, but all other unit tests are working.

Removed x86 and non-IOCP targets in preparation for new qfork implementation. Only supported build henceforth will be x64 with IOCP.

eliminating COW dependent tests to verify that IOCP is not responsible for crashes and other strange behavior being seen

Disabling the COW replacement for fork() temporarily. This appears to fix crashing issues with redis. Also commenting out related unit tests. Replication is broken until COW (or a better fork replacement) is put back in.

"r client list" returning information on 3 connections. Fixed loop logic to check for omem in all connections.

for non-IOCP build: fixes breakage in integration/replicationxx, unit/dump, and unit/instrospection unit tests

Fixing non-IOCP networking issues. Remapping WSAEWOULDBLOCK==>EAGAIN, and non-blocking send() can return 0 without having client disconnect.

Work in progress. Temporary move towards separate IOCP/non-IOCP builds because of thread state issues. Neither build set is particularily stable at the moment.

Fix for issue #59. Generated FDs are used everywhere until a SOCKET handle is used by the Winsock APIs. The win32_socketmap code generates the simulated FDs and handles the mapping from these to socket handles.

Conflicts:

	.gitignore