Added support for alternative-style FLV metadata.
Added support for alternative-style FLV metadata.

DDVTECH/mistserver,DDVTECH/mistserver,DDVTECH/mistserver,rbouqueau/libdtsc_xp,rbouqueau/libdtsc_xp,rbouqueau/libdtsc_xp,DDVTECH/mistserver,DDVTECH/mistserver