Prior to this commit the Heimdal ASN.1 compiler supported DEFAULTing
SEQUENCE fields on the encoder side, but not the decoder side, where
ASN1_MISSING_FIELD would inevitably result when fields were defaulted.
This patch adds the missing decode-side support for DEFAULT.
Highlighs for the compiler is support for CHOICE and in general better
support for tags. This compiler support most of what is needed for
PK-INIT, LDAP, X.509, PKCS-12 and many other protocols.
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@15617 ec53bebd-3082-4978-b11e-865c3cabbd6b
