Port network module

[Dmitry A. Kuminov]

Provide an OS/2 version of the platform-specific classes from the network module and enable it.

This includes porting the following classes:

• QHostInfo
• QNetworkInterface
• QNetworkProxy
• QLocalServer
• QLocalSocket
• QNativeSocketEngine

[Dmitry A. Kuminov]

This is kind of important for the GA since 90% of applications use the network in some or another form these days.

[Dmitry A. Kuminov]

A must for GA.

[Dmitry A. Kuminov]

Unix implementations of QNativeSocketEngine, QLocalServer and QLocalSocket should work fine on OS/2 so we will use them (with some tiny modifications such as ripping off IPv6 support) so far.

[Dmitry A. Kuminov]

QHostInfo and QNetworkInterface are implemented based on the Unix port as well. The only problem is that there is no SIOCGIFHWADDR support in kLIBC (or in the OS/2 TCP/IP library itself?) and therefore we can't get the hardware address of the interface through the ::ioctl API (and hence QNetworkInterface::hardwareAddress() will return an empty string on OS/2 at the moment). I've created #63 to solve this minor problem later.

Other than that, the network module seems to build fine. I'll perform some functional testing tomorrow before closing this defect.

[Dmitry A. Kuminov]

Fixed a number of socket notifier related bugs in r161. The network classes seem to work now, successfully tried examples/network/fortuneserver, fortuneclient and ftp.

Therefore, I will release Beta2 tomorrow with the network module included.