libtorc-baseui: Remove some LOC defines
libtorc-core: Track content type in TorcNetworkRequest
libtorc-core: Add TorcNetworkRequest::GetSize and WaitForStart
libtorc-core: Add TorcNetworkRequest::SetRange and GetPositions
libtorc-core: Add TorcNetworkBuffer::Type
libtorc-core: Fix a regression in buffer creation
libtorc-core: Fix a seek error in TorcFileBuffer