NSAssertionHandler - header added for NSFileWrapper
The various NSStream concrete classes have a first pass implementation: NSInputStream_socket, NSOutputStream_socket, NSInputStream_data, NSOutputStream_data , NSOutputStream_buffer, NSInputStream_file, NSOutputStream_file
The socket monitor/callback system has been overhauled to fix known problems going forward with socket based streams and distributed objects. This consists mainly of decoupling the select() management from the callback management allowing for accurate select() status across run loop mode changes and multiple callback monitors per socket. The major platform differences (windows vs. unix) were separated into their own files instead of the previous #ifdef mess. The NSInputSource system in the run loop was cleaned up to accommodate the new socket system and future additions.
These classes were deleted: NSSocketSet, NSSocketMonitorSet, NSSocketDescriptor, NSSocketMonitor, NSSocketMonitorSet_Windows, NSSocketInputSource_windows, NSSocketMonitorSet_Unix
And were replaced with: NSSocket, NSSocket_windows, NSSocket_bsd, NSSelectSet, NSSelectSet_windows, NSSelectSet_bsd , NSSelectInputSourceSet, NSSelectInputSource
NSTask and NSFileHandle on Linux/Solaris are affected by this as they were using the old socket monitoring system to look for background events and have been upgraded to the new one.
NSHandleMonitorSet_win32 upgraded with NSInputSource upgrade.
NSError - first pass implemented to assist with NSStream implementation.
-[NSMutableSet setSet:] - implemented
Cleared up some of the Linux/Solaris compiler warnings
