Changes from the Kerbnet release by Cygnus

Changes from the Kerbnet release by Cygnus

        * asn1buf.h (asn1buf_remove_octet, asn1buf_size, asn1buf_free,
        asn1buf_ensure_space, asn1buf_len): Add macro versions.
        (asn1buf_insert_octet) [__GNUC__ >= 2]: Ditto, using a GNU C
        extension.
        * asn1buf.c (asn1buf_remove_octet, asn1buf_size, asn1buf_free,
        asn1buf_ensure_space, asn1buf_len, asn1buf_insert_octet): Undef
        macros before defining as functions.
	[Kerbnet changes made by raeburn@cygnus.com]

        * asn1buf.h (asn1buf_expand): Remove "const" from int arg in
        prototype.

        * asn1buf.c (asn1buf_remove_charstring, asn1buf_create,
        asn1buf_remove_octetstring, asn12krb5_buf): Call malloc instead of
        calloc.
        (asn1buf_unparse, asn1buf_hex_unparse): Ditto.  Also don't
        allocate extra byte, since sizeof(STRING) does count the trailing
        null.
        (asn1buf_expand): Adjust bound based on increment
        value used, not value specified by caller.

	[Kerbnet changes made by raeburn@cygnus.com]

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@10174 dc483132-0cff-0310-8789-dd5450dbe970