Merge changes I97471c4d,I8a8626a8,I1f176740,I10da23ee,I9f9064fb

* changes:
  Apply sbrDecoder_Parse() function for all explict SBR elements
  Call QMF transposer initialization only with successful SBR processing
  Add error path to generateFixFixOnly()
  Add missing break in order to avoid a fallthrough in setConcealMethod()
  Add FDK_FALLTHROUGH macro to prevent implicit-fallthrough compiler warnings