Vcpkg defaults to installing packages for x86-windows, and from the
perspective of x64 builds, the packages installed just cannot be
found -- and the reason is not very obvious.
Having an example with commands that will install both x86 and x64 is
probably the right thing to do in this day and age -- and if somebody
only wants one and not the other, seeing a package name with architecture
specified helps with guessing how to achieve that.
Closes#22075.
Make configure behaviour consistent with CMake the default value of 0
for wxUSE_LIBLZMA in setup.h under MSW.
This also means that dependency on the system liblzma is not picked up
by default when --disable-sys-libs configure option is used, as this was
rather unexpected.
