Update libFLAC to 1.3.0. Rebuild with msvc static runtime.
Update libCURL to 7.35.0. Rebuild with msvc static runtime.
Update libOGG/libVORBIS/libVORBISENC to 1.3.4. Rebuild with msvc static runtime.
Add msvc crt to distribution. Simplify install makefiles.
Support https scheme in network IO provider.