Update cmake files to support 64-bit compilation.
Add variables to easily switch between 32-bit and 64-bit compilation
Update msvc_build.bat to support both 32-bit and 64-bit compilation
Optimize msvc_build.bat to avoi excessive output
Update AppVeyor build scripts so that default compilation is 64-bit now
Make default configuration built from opening MuseScore directory 64-bit
RelWithDebInfo. All other configurations are up to msvc_build.bat
script.
Qt libs which are used for building are placed in msvc2017_64 folder.
These changes require new structure of the dependencies folder.
1) fix some bugs which appear in runtime: replace QString::tostdstring() to Foo.toUtf8().constData().
2) Enable start center online community. To use it you need download webengine in your QT lib. see instruction https://musescore.org/en/handbook/developers-handbook/compilation/compile-instructions-windows-visual-studio-2017-wip
3) update install steps. Add additional dlls for webEngine. Add copying dlls and musescore.exe to /msvc.install/bin folder. Run project will work with the "$(ProjectDir)\..\..\msvc.install\bin\MuseScore.exe" specified in Debugging field in mscore project
4) Moving AppVeyor from MinGW to MSVC. Exclude ALL MSVC project from INSTALL project. Exclude ALL from PACKAGE. Remove migw-cmake in script build, add .bat instead. Remove xcopy from 7z archive step
5) Fix warning : Warning C4703 potentially uninitialized local pointer variable '' used; Warning C4456 declaration of '' hides previous local declaration; Warning C4458 declaration of '' hides class member
6) Change path to 11 version wix toolset which created .msi installer package
