Port MR 1560 from float to ivas-float-update

Closes #1642 (closed)

Clean-up of Switches

BE

• FIX_NUM_SUBFRAME_UPDATE - Dolby <-- not present
• FIX_1077_MEMORY_TEST_MISSING - orange: issue 1077 : add missing memory test <-- not present
• FIX_1081_BINAURAL_SPLIT_PCM_SANITY_CHECK - VA: issue 1081: correct error print-out when BINAURAL_SPLIT_PCM is requested <-- not present

Non-BE

• NONBE_FIX_1028_1DB_TCX_LEVEL_DROP - VA: Harmonize the logic setting LP weighting factor between TCX encoder and TCX decoder -> accept
• NONBE_FIX_SBA_SIGNALING_BITS_B - FhG: issue 1061: option B: signal sba order additionally in OSBA -> accept