Version bump to 4.11.1

WT-12461: Correctly use WAsioWrapper

Implementations that use a standalone asio (like the Windows builder for
releases) require the use of WAsioWrapper, instead of calling
boost::asio.

Version bump to 4.10.4

Target a specific VS build tools channel

The channel we used before was "Current", meaning any update to it, was
also used locally. This caused an issue where the build tools
misbehaved, and were not able to identify the compiler.

WT-12006: More robustly place the JS member functions

When placing a JS member on a widget, its name and value are remembered.
This is so that if the value is cleared or replaced, we do so for the
same member function.

There, however, exists a special case for member function where if a
single character is assigned to it, it is replaced by an empty value.
This serves to function such that setting the function to `0` for
example, will result in it being empty.

When we appended the semicolon to it, this caused that last piece of
logic to be ignored, and would generate incorrect JS, which called a
function `0;`.

Version bump to 4.10.1

Finalize release notes

Wt 4.9.2 version bump and final release notes

WT-9721: properly re-added pdfImageWrite.cpp

Previously, we restored the src.xml, but didn't actually restore
the cpp file, so subsequent makexml calls would throw it away again.

Wt 4.9.0 release notes