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/GraphicString.c b/skeletons/GraphicString.c
index e572ccd..5f62486 100644
--- a/skeletons/GraphicString.c
+++ b/skeletons/GraphicString.c
@@ -24,6 +24,8 @@
 	OCTET_STRING_encode_xer,	/* Can't expect it to be ASCII/UTF8 */
 	OCTET_STRING_decode_uper,    /* Implemented in terms of OCTET STRING */
 	OCTET_STRING_encode_uper,
+	OCTET_STRING_decode_aper,
+	OCTET_STRING_encode_aper,
 	0, /* Use generic outmost tag fetcher */
 	asn_DEF_GraphicString_tags,
 	sizeof(asn_DEF_GraphicString_tags)