CR: Karina

Added authority key identifier/subject key identifier checking.
Whenever a new cert was created, a new private key was also
created.  Typically you get a new key identifier with
that private key which is written to the child cert.  The
child cert can then find the appropriate parent cert
for validation via subject key identifier.

certificate notification code
-r 118191

ignore-dead-branch

secapi stuff as well as certificate handling stuff.
Grid manager as well

svn merge -c112450  svn+ssh://svn.lindenlab.com/svn/linden/branches/giab-viewer/giab-viewer-1 giab-viewer-1-23

svn merge -c112913  svn+ssh://svn.lindenlab.com/svn/linden/branches/giab-viewer/giab-viewer-1 giab-viewer-1-23