Added pre-computed hrtf properties compiler switch in options.h

#define NONBE_FIX_947_STEREO_DMX_EVS_POC                      /* Orange: Fix clicks on POC */

#define NONBE_FIX_947_STEREO_DMX_EVS_PHA                      /* Orange: Fix issues on PHA */

#define NONBE_FIX_951_MCMASA_5MS_RENDERING                    /* Nokia: issue #951: Differences for 5ms and 20ms rendering for McMASA at 13.2kbps to BINAURAL */

#define NONBE_FIX_922_PRECOMPUTED_HRTF_PROPERTIES			  /* Philips: Use pre-computed HRTF average L/R energies and IAC in all renderers	*/

#define NONBE_FIX_979_OSBA_STEREO_5MS                   /* FhG : issue #979 : 5ms and 20ms output different for OSBA and stereo */

#define FIX_983_DISC_ISM_DIGEST_NUM_OBJS                /* FhG: issue #983: the discrete ISM digest function uses the wrong number of objects */