Log Message:
Update to 1.6.3:

* Version 1.6.3 (released 2007-05-26)

** New API functions to extract DER encoded X.509 Subject/Issuer DN.
Suggested by Nate Nielsen <nielsen-list@memberwebs.com>.  Backported
from the 1.7.x branch, see
<http://lists.gnu.org/archive/html/help-gnutls/2007-05/msg00029.html>.

** Have PKCS8 parser return better error codes.
Reported by Nate Nielsen <nielsen-list@memberwebs.com>, see
<http://lists.gnupg.org/pipermail/gnutls-dev/2007-May/001653.html> and
<http://lists.gnupg.org/pipermail/gnutls-dev/2007-May/001654.html>.

** Fix mem leak for sessions with client authentication via certificates.
Reported by Andrew W. Nosenko <andrew.w.nosenko@gmail.com>, see
<http://lists.gnupg.org/pipermail/gnutls-dev/2007-April/001539.html>.

** Fix building of 'tlsia' self test.
Earlier some gcc are known to build tlsia linking to
$prefix/lib/libgnutls-extra.so rather than the libgnutls-extra.so in
the build directory, even though command line parameters look OK.
Changing order of some parameters fixes it.

** API and ABI modifications:
gnutls_x509_crt_get_raw_issuer_dn: ADD.
gnutls_x509_crt_get_raw_dn: ADD.