port/merge Eurecom APER support from OPENAIRMME

Eurecom has developed APER support for asn1c as part of the OPENAIRMME
softare (a LTE MME).  This is too important to let it bit-rout out
of asn1c.  Let's forward-port and merge it.
diff --git a/skeletons/REAL.h b/skeletons/REAL.h
index af3e84c..503e254 100644
--- a/skeletons/REAL.h
+++ b/skeletons/REAL.h
@@ -21,6 +21,8 @@
 xer_type_encoder_f REAL_encode_xer;
 per_type_decoder_f REAL_decode_uper;
 per_type_encoder_f REAL_encode_uper;
+per_type_decoder_f REAL_decode_aper;
+per_type_encoder_f REAL_encode_aper;
 
 /***********************************
  * Some handy conversion routines. *