change macros FIX_1439_SPEEDUP_elliptic_bpf_48k_generic_upsampledsig and...

change macros FIX_1439_SPEEDUP_elliptic_bpf_48k_generic_upsampledsig and FIX_1439_SIMPLIFY_elliptic_bpf_48k_generic to FIX_1439_SPEEDUP_SIMPLIFY_elliptic_bpf_48k_generic - unrolls still active, loops starting at 4. no speedup functionality yet