Revive the OS/2 version of Kermit 95

[davidrg]

OS/2 is still around and maintained (under the name ArcaOS) and people still use it but there hasn't been a free version of C-Kermit for OS/2 since around 1996 or possibly earlier. Since late 1995 OS/2 support was exclusively maintained as part of the commercial Kermit 95 product.

That code is all still present in this repository but was last built with some version of the IBM VisualAge compiler for OS/2 in the early 2000s for OS/2 Warp 3/4. There is a reasonable chance given the right compiler it will build again without too much effort - provided changes to support newer versions of Visual C++ and C-Kermit haven't broken things.

But the VisualAge compiler isn't freeware and I don't have a copy of it so Porting to OpenWatcom (#7 ) is the path forward here. And even if a copy of the VisualAge compiler was found OpenWatcom would still be the preferred option as its open source and available to anyone.

• Adjust makefile to get things building
• Fix all build errors
• Get binaries to actually run on OS/2 and take a screenshot
• Secure the open-source release of: cko32i20.def, ckotel.def, ckoker32.def, ckoker.msb, ckoclip.rc, ckoclip.ico, ckoclip.def
• mkdist script
• Github Actions auto-build
• OS/2 Native (.cmd) build
• Rebranding - "C-Kermit for OS/2" is a bit clunky. Long ago, back before it was a commercial product, it went by "OS/2 C-Kermit" and "Kermit/2". Need to check with Frank for his thoughts. Probably worth firing up OS/2 C-Kermit 5A(191) to see what it looks like and how it refers to itself (prompt, etc).
• Fix building of the remaining missing OS/2 binaries: k2dc.exe, telnetpm.exe #155
• Fix the PM cliboard server (it just crashes on startup) #154
• Building with NetBIOS enabled causes a crash on startup #56
• SET HOST does nothing for NetBIOS connections on OS/2 #339
• TCP/IP Networking doesn't work on OS/2 #57
• Sort out X/Y/Z MODEM support #153
• Optimised watcom OS/2 builds crash on startup #55
• Sort out distribution process. cknker32.exe/k2.exe is normally given an icon by the setup program as console apps can't have an icon resource
• Fix the creation of pcfonts.dll #371
• The Dialer on OS/2 crashes on startup #152
• Build k2crypt.dll for OS/2 #373
• OpenSSL for OS/2 #156
• Build the PC/TCP 1.2 and IBM TCP/IP 1.2.1 support libraries #438
• Fix conkbg() in ckotio.c for OpenWatcom on OS/2 #58