krb5_encode.c (encode_krb5_padata_sequence): New function which encodes a

krb5_encode.c (encode_krb5_padata_sequence): New function which encodes a
	sequence of pa_data elements

krb5_decode.c (decode_krb5_padata_sequence): New function which decodes a
	 sequence of pa_data elements.

asn1_k_encode.c (asn1_encode_sequence_of_pa_data): Make it possible to encode
	sequence of zero pa_data elements.

asn1_k_decode.c (decode_array_body): Make it possible to decode SEQUENCE OF
	encodinges of zero items (which is legal according to ASN.1)

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@6593 dc483132-0cff-0310-8789-dd5450dbe970