[vfs] CFile: remove 'virtual' from destructor
no class is derived from CFile
load replaygain tags on mp4 style files
load tags when opening file so they are available when we try to read replaygain

provide a fallback file type to tagloader based on content

pass content type to DVDplayer for types that support tags, in order to set a fallback filetype
[vfs] remove win32 code from SmbFile.h/.cpp
[vfs] remove win32 code from SMBDirectory.cpp
[3d] added 3D subtitle depth
renderer: add underlying support for 16bit textures on gles
renderer: move UploadYV12Texture to same location as in GLES renderer

Simplifies diffing
renderer: match GLES UploadYV12Texture structure with GL version
renderer: calculate source rect on upload GLES:EGL/CVRef/MediaCodec
[dxva] added dxva-hd renderer as alternative native dxva.
vdpau: move cropping of top and bottom lines to renderer
fixup! renderer: calculate source rect on upload GLES:EGL/CVRef/MediaCodec
renderer: factor out logic for upgrading GL format to 16bit
fixup! renderer: add underlying support for 16bit textures on gles
CArchive: fix log report introduced in 643133d433bdeb9089c73887391d81dde85c763c
[info] CStdString -> std::string
[info] ToLower() an infobool expression prior to searching to save unnecessary caseless comparisons
[info] splits InfoSingle/Expression out from InfoBool.h
[info] Made CGUIInfoManager::Register() return a shared_ptr to the InfoBool object
rather than an index into its cache of such objects. All places where
those index integers were stored are changed to store shared_ptrs, and
CGUIInfoManager::GetBoolValue() now accepts them instead.

This permits the lifetime of a registered bool to persist across calls of
CGUIInfoManager::Clear(), if necessary.