Fix options.h defines with prefix MERGE_REQUEST

Basic info

In lib_com/options.h there are three defines which cannot be deactivated at the moment:

1. MERGE_REQUEST_1378_SPEEDUP_ivas_mc_param_enc_fx_NONBE

2. MERGE_REQUEST_1472_SPEEDUP_ivas_mc_param_enc_fx_NONBE

3. MERGE_REQUEST_1564_SPEEDUP_ivas_dirac_dec_output_synthesis_cov_param_mc_synthesise_slot_fx_NONBE

4. and 2.: Because this would crash the encoder 3.: It is being overwritten later

• Float reference:
  • Encoder (float):
  • Decoder (float):
• Fixed point:
  • Encoder (fixed):
  • Decoder (fixed):

Bug description

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-xxxx