Use 'bld' instead of 'blb' for German pf.

phsource/ph_german

 
 
 phoneme pF
-  vls blb afr
+  vls bld afr
   ipa pf
   Vowelout f1=0  f2=1000 -500 -350  f3=-200 80
   lengthmod 2

src/libespeak-ng/phoneme.c

 		phoneme->phflags |= 12 << 16;
 		break;
 	case bld:
-		// FIXME: Not supported by eSpeak. Used in German p͡f.
+		phoneme->phflags &= ~phARTICULATION;
+		phoneme->phflags |= 1 << 16; // bilabial
 		break;
 	case alp: // pla pzd
 		phoneme->phflags &= ~phARTICULATION;