Windows CE support : uncommenting #define EACCES needed

- tested for Windows CE 5.0 under Visual Studio 2008 Pro
- tested for Windows XP under Visual Studio 2008 Pro
Windows CE support : some more #if !defined _WIN32_WCE

- Windows CE does not manage security attributes (no SetSecurityDescriptorDacl(), SetEvent (NULL, xxx) ...)
- Windows CE does not inheritance of sockets for child process (SetHandleInformation ((HANDLE) *w_, HANDLE_FLAG_INHERIT...)
- see comments about story "Porting ZeroMQ to Windows Mobile" on webpage http://www.zeromq.org/story:5