LLVM 19.1.7

Adds build for OpenSSL 3.0.16 using MSVC 14.40.

The previous commit used 14.43, which regressed codegen for ARM64 leading to instant crash.

Adds build for OpenSSL 3.0.16 without uplink.

This means that applink.c no longer needs to be linked into the host executable.
The file remains for now so that builds don't break, but it will have no effect.

Adds build for OpenSSL 3.0.16

Forward-port Tix 8.4.3 for win32 and arm64

Forward port Tix 8.4.3

Import build of Tcl/Tk 8.6.15

Adds build for OpenSSL 3.0.15

Adds build for OpenSSL 3.0.14

Import build of Tcl/Tk 8.6.14 (without Tix)