--HG--
branch : vendor

--HG--
branch : vendor

--HG--
branch : vendor

Add back support for debug builds on windows
Modify cmake build to generate minizip

However, this presently fails.

Eliminate mention of CMake specific-version Visual Studio generator: let it
use the most recently-installed version of VS.

Guessing that perhaps build_variables_checkout is inherited as is (lowercase)
from build.sh on Mac and Linux, whereas Windows capitalizes it along the way.

Otherwise fall back on ../build-variables as before.

A TC build host doesn't literally check out build-variables et al. as siblings
to the repository being built, but it does set environment variables to them.

Remove Debug builds from build-cmd.sh and autobuild.xml.
Comment out minizip builds from build-cmd.sh and autobuild.xml. (We're not
sure whether we're going to have to reinstate minizip.)

Use $LL_BUILD to apply relevant compiler switches to CFLAGS and CXXFLAGS for
Linux configure.

Therefore using $AUTOBUILD_WIN_VSPLATFORM for that middle subdirectory name is
incorrect.