* Build: Add symbols to 7z archive
It is much smaller than ZIP (15MB vs 34MB).
* Build: Don't create source package
There is no need to create package with sources as sources for given
release can be easily obtained from git.
* AppVeyor: Remove unneeded install script
__MakeFinal.bat now handles it.
* Build: Less verbose output
* Build: Support for version suffix
AppVeyor may add suffix to version (X.Y.Z-abc) in case of PR builds.
* AppVeyor: Disable shallow clone
To be able to use git commands (in source indexing script).
Use history depth 1 instead.
* Build: Add source index to PDBs
Add source information to PDBs so that source files can be retrieved from Github by debugger.