The need to add a "d" postfix to the names of debug libraries and plugins _only_ for MSVC should be documented

Seems like there is a regression on the qml library loading when I try to load a debug build of my plugin.

Using Qt 5.13.2 with Mingw 7.3 or MSVC 2017 it worked fine

Using Qt 5.14.0 it only works with MSVC 2017

If I use Qt 5.14.0 with mingw, I got an error "QQmlImportDatabase::resolvePlugin: Could not resolve plugin", my plugin name is "SharedQmld.dll"

The code responsible seems to be this, along with the new "release" build of Qt instead of debug and release:

qtdeclarative\src\qml\qml\qqmlimport.cpp:1860
# ifdef QT_DEBUG
        QLatin1String("d.dll"), // try a qmake-style debug build first
# endif

If I remove the CMAKE_DEBUG_POSTFIX it is working fine