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
[WIN32] changed: log a more meaningful message if DXVAHD fails because the device doesn't support it.
changed: pass CStreamDetailSubtitle as reference
[dxva-hd] remove mistakenly redefined members after 04bb49cc4475778a82da86673d3f3486193c5354
Merge pull request #3781 from afedchin/dxva-hd-fix-warn

[dxva-hd] remove mistakenly redefined members
removed double assignment in EpgSearchFilter::Reset()
Merge pull request #3587 from Nachtzuster/ma4_replaygain

fix: Use replaygain tags for .m4a type family files too, closes Ticket #13948
[Confluence] cosmetics - font colors
Merge pull request #3782 from wsoltys/reference

changed: pass CStreamDetailSubtitle as reference
IPlayer: let player know on close if it will be reopened
paplayer: instruct AE to keep configuration when skipping tracks
AE: add interface method KeepConfiguration